On the relationship between architecture and geomantic omen

Architectural geomantic omen and modern science;

Talking from several key problems of architectural geomantic omen

Author: Zhang Dongjie Wang ... Article source: original hits of this site: 74 Update time: 2005- 10-20

The origin and development of architectural geomantic omen is related to the development history of China civilization, and it is the witness and reflection of ancient civilization in China. The structural characteristics of its geomantic architecture, which is surrounded by mountains and waters, embodies some ideas of modern science and is the perfect embodiment of the ancient people's idea of "heaven and earth are one" in architectural geomantic omen. The non-mainstream part of architectural geomantic omen is arbitrarily played and exaggerated by Jianghu geomantic omen or magicians, which contains many superstitious elements and should be eliminated.

Key words: architectural geomantic omen, modern science, integration of heaven and earth, ancient civilization

1 the origin and development of architectural geomantic omen

1. 1 Architectural geomantic omen is one of the long-standing historical symbols of primitive civilization in China.

The concept of "geomantic omen" is generally believed to have originated from Guo Pu's Funeral Classics in the Jin Dynasty. "Buried Sutra" said: "The qi is dispersed by the wind, and the boundary water stops. The ancients gathered for it and stopped it, so it was called Feng Shui. " He also said: "The method of geomantic omen, water comes first, followed by Tibetan wind", "the depth is multiplied, and geomantic omen is self-contained" and so on. In fact, the book "Mr. Kate's Tibetan Classics" written by Wu Qingzi in the Han Dynasty involved geomantic omen earlier. The book says: "Internal qi generates hair, external qi forms, internal and external qi multiplies, and Feng Shui becomes its own". The above shows that "Feng Shui" appeared as early as the Han Dynasty. The discussion of geomantic omen mainly comes from the understanding and grasp of the general law of the natural phenomenon of "wind gathers and wind disperses, water stops" and the subjective feeling of the objective world. After decades of development, a complete set of Feng Shui theory has been formed.

The formation of geomantic omen theory is the result of a lot of experience and practice. Generally speaking, the formation of theory, especially in ancient times, lags far behind the practice of Feng Shui.

Then, how far is the age when the thought of architectural geomantic omen came into being? The core of the ideal model of architectural geomantic omen is "four gods" or "four spirits", such as Qinglong, Baihu, Xuanwu and Suzaku. According to "Three Auxiliary Huang Tu", "Qinglong, Baihu, Suzaku and Xuanwu are the four spirits of heaven and square". 1988, the patterns of Qinglong and Baihu were found in Xishuipo, Puyang, Henan Province, indicating that the concept of "four gods" appeared during Yangshao culture 6000 years ago. In Fengjingwa, Zhou Zong, in the tomb of Zeng Houyi excavated in Leigudun, Suixian County, Hubei Province in about 433 BC, the pattern of "Four Gods" is closely related to the Big Dipper and Twenty-eight Nights. Sima Qian in Historical Records? The discussion on the phenomenon of correspondence between heaven and man in the Book of Heaven Officials: "The stars are arranged in rows, the body is born on the ground, the essence is born in the sky, and they are in the wrong position, each with its own place, like things in the wild, like officials in the DPRK, like things in people." The above concept of architectural geomantic omen shows that the civilization of China was at least 6,000 years ago, which is consistent with the conclusions of the following experts.

"Due to archaeological discoveries in Hemudu and other places in the Yangtze River basin, world history should be rewritten, and it is necessary to rearrange the rankings of major ancient civilizations." A few days ago, Professor Shishi, president of China National History Research Association, put forward his new views to the outside world. Professor Shi believes that "we say that Chinese civilization has lasted for 5,000 years, but western scholars have always denied it. They only admit that there is a history recorded by Oracle Bone Inscriptions, that is, the Yellow River civilization is only over 3,000 years old. " In the past, the arrangement of the four ancient civilizations in world history was as follows: First, the Nile civilization, more than 6,000 years ago; Second, the two rivers civilization more than 5000 years ago; Third, the Indus civilization, more than 4000 years ago; Fourth, the Yellow River civilization more than 3000 years ago. Since 1970s, among many important archaeological discoveries in China, Hemudu site in Zhejiang Province discovered by 1973 is the first one, where cultivated rice was unearthed 7,000 years ago. 1979, the site of Chengtou Mountain in Hunan Province was discovered again. There were ancient cities, altars and paddy fields 6000 years ago. In Dongting Lake area, artificial rice was also found 8000-9000 years ago. The existing findings show that some civilized factors in the Yangtze River basin are earlier than those in the Yellow River basin. The historical style says: "the world history written by western scholars in the past must be rewritten, all historical theories that are only beneficial to western colonists must be overthrown, and the standards of civilization must be redefined." "This work must be attended by scholars from all nationalities in the world, not a few scholars. The history books of all mankind should be restored to their original colors." (Excerpted from Life Times.

1.2 Feng Shui and the Book of Changes

Does Feng Shui originate from the Book of Changes? The answer is no, for the following reasons:

1) concept sequence; The concept of "four gods" of Qinglong and Baihu in architectural geomantic omen has a long history, much earlier than the Yijing era.

2) The early concept of geomantic omen, such as Guo Pu's Funeral Sutra in the Jin Dynasty, said: "Qi dissipates by the wind, and the boundary water stops. The ancients gathered for it and stopped it, so it was called Feng Shui. " Mainly talking about the relationship between qi, wind and water, there is no thought about the Book of Changes.

3) the problem of rank or evolutionary order. Folk houses are closely related to ancestors, ranking first; The Book of Changes is the product of advanced wisdom and the development of civilization. Therefore, we can say that architectural geomantic omen has a long history, which is related to the civilization history of the Chinese nation for 5,000 years or even earlier.

What is the relationship between Feng Shui and the Book of Changes? After the book of changes came into being, people used the idea of the book of changes to think and develop architectural geomantic omen, which promoted the diversified development of architectural geomantic omen, but also produced many irrational or superstitious things such as good luck, longevity and death.

The evolution process of architectural geomantic omen is shown in Table 1:

Table 1 evolution of architectural geomantic omen

How did the superstition of architectural geomantic omen come into being? There are mainly the following aspects:

1) Fragmentation decomposition and understanding of some concepts of architectural geomantic omen. In the theory of geomantic omen, the concept of "outstanding people and outstanding land" is particularly striking. It expresses people's good wishes in the living environment, and it has some merits to face up to the influence of natural conditions on human activities. However, if this relationship between man and land is deduced without restriction, it may fall into the quagmire of superstition. If we say that "the mountains are thick and fat, thin and hungry: the mountains are clear and beautiful, and the mountains are turbid and fascinating; Shanning people are stationed and the mountain people leave; The mountain is brave, and the mountain is retreating; Mountain shun people filial piety, mountain inverse people damage "(from" Qingnangjing Haijiao Jing "? If the article "Seeking Dragons and Regulating Qi" is still a mixture of truth and superstition, then, "the dragon's point is right, and wealth is determined by heaven; Before and after the peak, wealth and fairness; Tang Ming palm, accumulate jade and pile up gold; Hall down, defeat fierce; Flying mountains on all sides, father and son are things "(ditto), this is superstition.

2) Wealth-collecting effect: In order to collect money, Jianghu Feng Shui masters deliberately choose some terrible names, explain them in an irrational way, and use some means such as ghosts and gods, and some means such as losing money and losing official positions to collect money. For example, the sharp stone behind the building, because of long-term experience, feels harmful to people, but does not understand its causes, so it has taken a terrible name, such as arrow evil or gun evil. In fact, according to the viewpoint of modern science, these irregular "sharp stones" will produce some "turbulent winds" that are not suitable for human body, especially the "electromagnetic environmental pollution" in modern society, and their direct electromagnetic reflection is unfavorable to human body.

3) Mysterious Effect Most Feng Shui masters keep their experiences secret or sell them at high prices, which makes the development of Feng Shui culture mysterious and slow. Can not develop in the sun, but also brings the slow pace of knowledge renewal.

1.3 Another name and genre of geomantic omen

Architectural geomantic omen has a long history, with many schools and nicknames, mainly including geomantic omen, geography and physique. For the explanation of the word "integrity", Xu Shen in the Eastern Han Dynasty thought: "Like the sky; Yu, tunnel ",which is what Kenny Kan called" the way of heaven and earth ". Kanyu was one of the two schools of geomantic omen in Han and Tang Dynasties, and their aim was to "make heaven and earth look like four seasons". Emphasize the harmony and unity of the universe, nature and human beings. Sima Qian in Historical Records? Taishi Gongxu said, "My husband grows in spring and grows in summer, and the autumn harvest lasts in winter. This is also the Great Classic of Heaven, and Fushun does not think that the world is a discipline. Therefore, the four seasons are smooth and must not be lost. "

The word "geography" first appeared in Zhouyi? In the copula, the book says: "Yi is in line with heaven and earth, so we can learn the way of tomorrow, look up at astronomy and geography, so we know the reason of heaven." Wang Chong in On Balance? "Chronicle" said: "There is a saying: the sun, the moon and the stars are in the sky, and there are mountains and valleys on the ground. "Astronomy and geography correspond, that is, the so-called heaven. They are related but different. Book of rites? The moon order said, "Don't change the way another day, don't violate the Jedi's principles, and don't disturb people's discipline. "Humanity has been added between Heaven and Heaven, and the highest realm of Heaven and Humanity is the time, place and people. Taking "geography" as another name for "Feng Shui" has been used ever since. " "Looking up at astronomy and looking down at geography" are two main contents of geomantic activities, and also the root of astronomical geography in modern natural science. The schools of geomantic omen circulating in society mainly include Luan Tou School and Li Shi School, and each school contains its branches:

Chaos school: situational school, imagist school, formal school.

Management style: Eight Houses School, Numerology School, Sanhe School, Guagua School, Xing Fei School, Wuxing School, Kongxuan Big Gua School, Bagua School, Nine Planets Flying Bo School, Qimen School, Yangzhai Three Schools, Twenty-four Mountains School, Su Xing School, Golden Lock Guan Yu School (walking between Yin and Yang).

2. The scientific basis of the concept of harmony between man and nature in architectural geomantic omen.

2. 1 Structural features of architectural geomantic omen

In order to achieve the purpose of hiding wind and gathering gas, the ancients formed a "feng shui" structure with China characteristics: around the building, a structure of left green dragon, right white tiger, former suzaku and rear Xuanwu was formed, surrounded on all sides and spread out layer by layer, and all the mountains should face the center of the cave, that is, feng shui building; Surrounded by water, there is a backer barrier behind it, sand hills on the left and right sides, and an arch in front, which passes through the water inlet. Simply put: the mountains are surrounded by water, and the mountains are beautiful. Four gods, such as Qinglong and Baihu, are orientation gods, and each town guards the city, town and house. Anyone who meets the requirements of "Xuanwu Chuishou, Suzaku Dance, Qinglong Wind, and White Tiger Training." People can call it "the land of four gods" or "the land of four spirits"

The ideal location of architectural geomantic omen is as shown in figure 1. The architectural geomantic omen of Nanjing ancient city and Luoyang in Sui and Tang Dynasties is shown in Figure 2.

Figure 1 Ideal Location for Architectural Geomantic omen

Fig. 2 Geomantic Sketch of Nanjing Ancient City and Luoyang Architecture in Sui and Tang Dynasties.

2.2 The structure of building geomantic omen determines its performance.

Architectural geomantic omen can reflect China's complete thought of the integration of heaven, earth and man in ancient times, that is, two functions: the integration of heaven and man with high stability and the integration of heaven and man.

2.2. 1 The scientific concept contained in the idea of "harmony between man and nature" in architectural feng shui

The architectural geomantic omen is characterized by the pattern of storing wind and gathering gas, surrounded by mountains and water; Single buildings are generally square and rectangular buildings, and the whole building is a rectangular complex with symmetrical central axis, which has high stability. This architectural style gives more consideration to the influence of natural environment (land) on people. It has the characteristics of high stability and should be considered in modern architecture. Figure 3 shows the layout of the geomantic architecture of the Forbidden City, which embodies the geomantic characteristics of the architecture with meridian symmetry and built on the mountain.

Fig. 3 Layout of Geomantic Architecture in the Forbidden City Geomantic architecture embodies relevant principles in modern science:

1) The building structure embodies the principle of the lowest energy in physics: the building geomantic omen is required to be built on the flat ground, not on the top of the mountain or on the slope, with low kinetic energy and potential energy; Buildings cannot be built on deformed geology, so their elasticity is low; Its structural characteristics of wind storage and gas accumulation are that it is close to mountains and waters, and the external environment can effectively block the wind, so the wind speed of Feng Shui buildings is small and it is less affected by the wind. Architectural geomantic omen can avoid the positive force of water or wind by avoiding the positive or negative bow of water or wind;

2) The beautiful scenery and the embrace of water reflect the natural ecological cycle of human survival. How does the wind affect buildings? Idealized treatment of buildings, that is, only considering the shape and size of buildings without considering the deformed rigid body. In order to compare with the general consideration of building rotation on the same plane, the rotation under the action of wind is mainly considered. In the case of the same floor height, the rotational kinetic energy is considered. In the process of building rotation, the greater the moment of inertia J, the more stable it is.

Fig. 4 is a schematic diagram of rectangular flat plate, vertical plate with shaft rotating around the center, solid circular thin plate and shaft rotating along the diameter.

From the moment of inertia of wind impact resistance, the square structure and circular structure in single buildings have large moment of inertia, so they have high stability, but circular structures are rare, and square structures are very in line with our traditional habits and are highly respected. The whole building complex is square or rectangular and symmetrically distributed, so the energy is low. Triangular or irregular structures are rare because of their high energy and instability. Most buildings have backers behind them, which are interdependent and form a stable whole. The relationship between wind coefficient and aspect ratio is simulated and calculated. Where b is the length of the windward side; D is the length of the downwind, and the wind direction is perpendicular to one side of the rectangular plane. The average layer wind coefficients in downwind direction, crosswind direction and torsion direction are recorded as CD (z), CL (z) and CM (z) respectively, and the fluctuation values are recorded as C ′ d (z), C ′ l (z) and C ′ m (z) respectively. The calculation results show that the length-width ratio D/B is 65. Experimental study on wind characteristics of high-rise buildings, Journal of Vibration Engineering, 2003, 16 (4): 409-4 14)

The simulation results are shown in Figure 5.

Fig. 5 Relationship curve between wind coefficient and aspect ratio of square buildings From the above analysis, it is easy to understand the following two conclusions of the ancients:

1) The ideal living environment in Xu Lai should be breezy and cool, which conforms to the living style. According to the present explanation, the wind should be in the stratosphere, and there should be no strong wind that produces turbulence or vortex. We should set a standard for the long-term impact of wind speed on human health, which is what we modern people should consider for our own health, because strong winds and dust carried will directly affect people's health. The ancients thought that flat houses were relatively stable, while slopes were quite dangerous. According to the modern viewpoint, things on slopes always have the potential energy to move downward or deform. It may also have a certain potential impact on people's psychology. If the current building is built on the terrain with different rheological properties of the foundation, or on the terrain with potential rheological properties, it is also unstable. 2.2.2 The architectural layout is characterized by air flowing first and then flowing. The gases that people or instruments can feel mainly include:

1) Essential gases for human body: air (O2, CO2, H2O, N2, etc. ), water and moisture (direct water and plant water). It is related to architectural ecology and is an organic part of architectural geomantic omen. In modern words, it has certain negative ions and suitable humidity, which is very beneficial to the needs of human health. On the other hand, it is conducive to the realization of the idea of "harmony between man and nature".

Turbidity of qi: beautiful scenery means clear qi; The mountain is dry and the water is dirty. Turbidity of qi is a taboo of building geomantic omen, which is harmful to human health. The deterioration of the ecological environment has forced many ancient civilizations to disappear.

2) Popularity-The general process of wealth effect is to drive business opportunities through popularity flow, and then form wealth. For example, from the opening of the subway and the improvement of popularity, the prices in the vicinity are soaring. In architectural geomantic omen, subway can be considered as wealth. In fact, the railway is only a direct or indirect carrier to realize wealth, and popularity is the direct source of wealth. The construction of bustling commercial department stores and the development of mountain tourist attractions can all show that popularity is the direct source of wealth. However, the general Jianghu feng shui masters seldom talk about popularity, and directly relate water, including roads, streets, people and wealth in the city, which is biased. Specific problems should be analyzed in detail.

Creating wealth lies in understanding the potential qi and the qi that will disappear. Any potential or public factors that can bring popularity can be called potential gas, such as subway, expressway and policy influence in planning and construction; All potential or public factors that can reduce popularity are called disappearing qi; The shortage of resources has caused the popularity to soar, leading to the rise of mineral products and oil prices; Advertising, publicity and other methods to stimulate popularity, in this sense, the sales strategy of small profits but quick turnover is an effective way to win popularity.

But there are exceptions, such as the giant Buddha and the Taoist temple, which belong to a pure atmosphere. Even if the popularity is strong, it has little to do with business opportunities, which may be the reason why architectural feng shui has always emphasized staying away from these places.

3) The atmosphere communicating with heaven, mainly microwave, was the main material basis for the ancients to realize the unity of heaven and man.

4) Sensory qi, such as light and temperature, is not mainstream.

So what is the concept of "Qi" in traditional Feng Shui? The main contents of the theory of "Qi" include three aspects: first, the meaning of "Qi", which is usually expressed as "clouds and mountains are also Qi" (Shuo Wen Jie Zi by Xu Shen in the Eastern Han Dynasty); The landscape is full of yin and yang (Qingnang Haijiao Jing); "Food is taste, taste is gas" ("Dai Li? Four generations). The second is the nature of "qi", such as the expression: "The negative yin and yang qi is the wind, rising to the clouds, falling to the rain, walking on the ground is the qi, and everything is born. " ; " Four corners, eight directions, each has its own gas. Those who are the yang of qi walk in the wind and those who are the yin of qi walk in the water. "(Gao bo" xiangzhai? Scripture "); "It is qi, which is the most powerful and harmless, so it is stuffed between heaven and earth" ("Mencius? Gong Sunchou "). The third is about the function and role of "qi", such as: "Where the ground is full of qi, from the shadow of people, the strength is heavy and slow; The weather is good for educating people, and the energy floats fast. Therefore, Yangzhai inherits the auspicious atmosphere of the land, especially for the prosperity of the sky. " (xiangzhai? Code); "Internal qi is born, external qi is shaped, internal and external multiplication, and feng shui is self-contained" (Mr. Kate was buried); "Heaven and earth are in harmony, and everything comes into being" ("On balance? Nature ").

The composition of qi in geomantic omen can be divided into primordial qi, dead qi, Yin Qi, Yang Qi, rustic qi, rustic qi, riding qi, gathering qi, receiving qi, qi pulse and qi mother. It is believed that as long as the living and the dead are angry, there will be good omen. So the purpose of feng shui is to cure qi, that is, to find qi. Qi in ancient geomantic theory has some simple materialistic colors. People think that Qi is the element that constitutes the origin of the world. It changes endlessly, turning into mountains, turning into water, flowing around the sky, running underground and gestating everything. 2.2.3 Ecological Thought Architecture Feng Shui Ecology is a science that studies the relationship between living things and between living things and the environment. At present, facing many serious problems such as environmental deterioration, resource shortage and population expansion, ecology is considered as a science that can provide concrete solutions to these major problems. Many principles and principles of ecology have been widely used in many aspects of human production activities. The ecological connotation of "architectural feng shui" is mainly reflected in two aspects: first, the harmonious relationship between natural environment and people; Second, how to understand and use the environment in practice, and serve the architectural geomantic omen, get the best living environment, and reach the highest state of "harmony between man and nature".

In China's architectural geomantic omen, it is necessary to cover the mountains with green plants, otherwise barren hills or rocky mountains will feel "suffocating", and the natural ecological view that destroys geomantic omen and beautiful scenery is an organic part of architectural geomantic omen. The main functions of green plants in architectural geomantic omen are: maintaining life and adjusting environmental needs (oxygen and humidity); The function of shielding evil spirit includes wind evil spirit, electromagnetic evil spirit and so on. Blocking the wind will reduce the wind speed.

In this respect, architectural geomantic omen is consistent with the concepts of modern life quality, social sustainable development and ecological environment, so as to realize its own design concept and maintain beautiful scenery.

Water is also one of the necessary conditions for building wind. Its main functions are: it is beneficial to keep the air fresh and certain humidity, to people's health, and to the growth and metabolism of plants; Water should be clean and surrounded; On the contrary, direct water and dirty water are not good for people and plants; Cleaning the surrounding water is also the requirement of harmony between man and nature; It has also been suggested that confining water is beneficial to irrigation and fire fighting. Jianghu geomantic omen always thinks that water control is wealth. Is this reasonable? It has played a certain role, but it is not direct. In ancient times, it was a favorable carrier for realizing money. Judging from the formation process of the concept of water control wealth, in ancient times, water was used as a means of transportation, or directly obtained food or exchanged goods from rivers and lakes, which was conducive to obtaining money and property. Therefore, the ancients directly thought that water was wealth; Later, based on the above understanding, extending to the road is also wealth. Now almost all handed down and modern Feng Shui books hold this view. Reflect that degree of people's superstition and worship. In fact, water and road are the effective carriers for the ancients to realize property exchange and the way to realize money. Modern people have expanded a lot of carriers or means to realize property exchange, such as advertising, railways, subways and project investment. Can be regarded as the carrier of property right transaction. Water needs to be transformed into wealth, and wealth can only be obtained through human activities. 2.2.4 Compared with the ancient civilizations in the world, the scientific concept contained in the idea of "harmony between man and nature" in architectural geomantic omen in China can better reflect the idea of harmony between man and nature, and has a world view with China characteristics. The concrete performance is to solidify the concept of harmony between man and nature in architecture; The idea of the unity of heaven and man has been produced as early as the Yijing era, which is related to the formation process of worshipping heaven. It should be emphasized that the integration of man and nature refers to the exchange of information in outer space such as the sun, rather than the transmission and exchange of electromagnetic information generated by human beings themselves.

The sun constantly radiates energy in the form of electromagnetic waves. From the spectrum, electromagnetic waves from the sun cover almost all the electromagnetic spectrum, from high-energy gamma rays with a wavelength less than 10-9m to low-frequency radio long waves with a wavelength greater than 104m. Among them, visible light and infrared parts bring light and heat to the earth, and these radiations are quite stable. However, the energy share of short-wave components such as ultraviolet rays, X-rays and γ-rays is small, but their magnitude changes dramatically with solar activities, which has a serious impact on human beings.

How does the information in the sky affect people? In 1980s, people clearly put forward the concept of "information effect" of biological effects of low-intensity millimeter waves (1982). In the mid-1990s, Russian scholars put forward the molecular peptide regulation theory of millimeter wave biological function (1995). At present, the concept of "information effect" of biological effect of low-intensity millimeter wave has been widely accepted, because there are sufficient arguments to analyze this theoretical viewpoint as a whole. Water has the strongest absorption of millimeter wave energy. Millimeter wave radiation can not only selectively bring energy to free water molecules, but also change the random situation of water environment, thus leading to phase change in biochemical system reactions. Millimeter wave radiation can change the structure of protein by acting on water molecules, and then affect the activity of enzymes and the synthesis of energy (ATP). Millimeter wave radiation can affect the properties of the medium inside and outside the cell by acting on water molecules, thus leading to the functional changes of the membrane. This important link is of great significance to the biological and therapeutic effects caused by millimeter wave radiation. Does the millimeter-wave information function in outer space affect people everywhere? The answer is conditional.

It is known that millimeter wave radiation in nature comes from the sun, planets and clouds, but it cannot reach the ground due to the dispersion and absorption of oxygen molecular layer, fog, rain, snow and hail in the atmosphere, so human beings are little affected by it in the evolution process. There are inherent oscillation and fluctuation processes in life activities in human body and other biological systems, including electromagnetic oscillation in millimeter wave band. As a kind of information, it plays an important role in ensuring normal life function. If the band with the smallest atmospheric absorption is called the atmospheric propagation window, there are three window bands below 100GHz, namely 19GHz, 35GHz and 90GHz, all in the microwave band.

The geomantic terrain structure of the building is similar to a parabolic antenna. The reflecting surface is composed of four gods and is a parabolic conductor surface or interface. Geomantic architecture is placed on a parabola with equal focus or quasi-focus (which varies according to the direction of the received signal). Using the geometric characteristics of paraboloid, paraboloid antenna can reflect the information with weak directivity (human activity signal) into the information with strong directivity; Similarly, after the signals from outer space are absorbed by plants in green mountains and green waters, the remaining information can also be effectively reflected to the geomantic architecture area. Therefore, the structural characteristics of architectural geomantic omen can make people communicate with the outside world and realize the following properties of parabolic antenna: after microwaves parallel to the parabolic axis are reflected by paraboloid, all reflected lines converge to the focus, or after any parallel microwaves are reflected by paraboloid, all reflected lines converge to a point on the axis; On the contrary, after the light emitted by the focus is reflected by the paraboloid, all the reflection lines are parallel to the axis of the paraboloid.

Exposed rocks have a strong reflection effect on electromagnetic waves above 30kHz, which is harmful to people at the action point.

Although the earth formed by wetlands or green plants also has a strong reflection effect on electromagnetic waves above 300MHz, after the surrounding water and green plants absorb electromagnetic waves, there are mainly microwave bands such as 19GHz, 35GHz and 90GHz in the atmospheric propagation window, which effectively reduces the microwave intensity. Although it is very weak, the reflection of microwave in a large area of a building area has certain information function and biological effect.

How does architectural geomantic omen embody the concept of harmony between man and nature? China's traditional thought requires the unity of heaven and earth, which is embodied in the pyramids and the Sphinx of ancient Egypt. The geomantic omen of ancient buildings in China also embodies this idea and expresses the worship and pursuit of heaven. Its specific performance is as follows:

1) The geomantic terrain features of the water-holding buildings around the mountains are similar to parabolic antennas, and the geomantic buildings are located in the focus or center, exchanging material wave (microwave) information with the outside world to the maximum extent;

2) Green plants and water absorb and reflect external material waves, which reduces the direct radiation of material waves, and the exchanged microwaves are more suitable for the information effect and biological effect of human body.

3) Architectural geomantic omen is very taboo for barren hills or rocky mountains, that is, external material waves directly act on the human body after being reflected by barren hills or rocky mountains, which is very taboo.

Therefore, architectural geomantic omen is a perfect building that is people-oriented and "the unity of heaven and earth". Joseph Needham, an outstanding contemporary historian of science and a famous British scholar, said: "When Greeks and Indians developed mechanical atomism, China developed an organic philosophy of the universe." "No other place shows their great ideas as enthusiastically as the people of China: people can't leave nature, not to mention the main buildings such as palaces and temples. Whether they are concentrated or scattered in rural areas, they often show the' cosmic patterns' and symbolic meanings such as directions, seasons, winds and stars" (History of Science and Technology of Joseph Needham in China (Volume III). Beijing Science Press, 1975.337-338).

3 Conclusion

The origin and development of architectural geomantic omen is related to the development history of China civilization, and it is the witness and reflection of ancient civilization in China. The structural characteristics of its geomantic architecture, which is surrounded by mountains and waters, embodies some ideas of modern science and is the perfect embodiment of the ancient people's idea of "heaven and earth are one" in architectural geomantic omen.