Who can explain to me in detail what is: heavenly stem, earthly branch, twenty-eight nights, Jiazi Yin Na?

Heavenly stems and earthly branches is referred to as "Ganzhi" for short, and Tiangan: A, B, C, D, E, Ji, G, Xin, Ren and Gui; Earthly branches: Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu, Hai (Note: the twelve earthly branches correspond to the zodiac-Zi: Mouse; Ugly: cattle; Yin: tiger; Thumb: rabbit; Chen: Dragon; Rudder: snake; Afternoon: horse; No: sheep; Shen: Monkey; Hey: chicken; Hey: dog; H: pigs. )。 Ten branches and twelve branches are matched in turn to form sixty basic units. The ancients used this as the serial number of year, month, day and time, which is called "the discipline of branches and branches".

Heavenly stems and earthly branches is a symbol designed by the ancients to facilitate the 60-digit system when building calendars. For ancient China people, the existence of heavenly stems and earthly branches was as simple as Arabic numerals. Later, these symbols were applied to maps, directions and time (time axis and space axis), so these numbers were endowed with more and more meanings.

Twenty-eight stars, also known as the Twenty-eight Palace or Twenty-eight Stars, divide the stars in the southern transit into twenty-eight groups, and the circle of stars distributed along the ecliptic or the celestial equator (the equator of the earth extends to the sky) is divided into four groups, also known as four elephants, four beasts, four-dimensional and four-dimensional gods, and each group has seven stars. Its origin is still not completely clear.

At first, the ancients chose 28 stars to compare the movements of the sun, the moon, gold, wood, water, fire and earth as observation marks. The meaning of "lodge" is similar to the "palace" of the zodiac, which means constellation. Represents the position of the sun, the moon and five stars. In the Tang Dynasty, Twenty-eight Hostels became the main body of the twenty-eight celestial bodies, and these celestial bodies were still named after Twenty-eight Hostels. Different from Sanyuan, as a celestial body, Twenty-eight Hostels are mainly used to divide the ownership of star officials.

The 28 huts start from Kakuk and are arranged from west to east, in the same direction as the sun and the moon:

The East is called Qinglong: Jiao Mujiao Kang Jinlong Nyctereute Fang Ri Rabbit Heart Moon Fox Tail Fire Tiger Basket Water Leopard;

In the south, Suzaku is called: Muan Jing Ghost Golden Sheep, Liu Tu, Xingri Horse, Zhang Yuelu, Winged Fire Snake, Water Worm;

In the west, it is called the White Tiger: the Golden Dog of the Tiger Wood Wolf Tower, the Stomach Soil, the Pheasant, and Alnilam, the fire monkey of Bi Wu Yue Gou;

The north is called Xuanwu (the combination of tortoise and snake is called Xuanwu): Kirin Niu Niu female figure bat rising sun rat fierce moon Yan room fire pig wall water.

Jiazi Yin Na

Ten stems and twelve branches are collocated in turn, from Jiazi to Guihai, and a total of 60 combinations are called Sixty Jiazi. "Yin Na" originated from Dong Zhongshu's theory of five elements and Hong Fan's theory of five elements. It is a special term of ancient metaphysics in China and a part of the classic theory of luck in traditional Chinese medicine. This is recorded and studied in detail in Huangdi Neijing-Six Jacky Collections-Five Clouds.

Jiazi, ugly, there is gold in the sea;

Bing Yin, Ding Mao, fire in the furnace;

Chen Wu, Keith, there are big trees;

Wei Xin Geng Wu, there is soil on the roadside;

Gui You Ren Shen, with sword front gold;

JOE, Yihai, has a mountain fire;

Bingzi and Ding Chou have holes in the water;

Wuyin, Jimao, the same wall soil;

Chen Geng and Sins, with ash gold;

Renwu, cinnamon, willow;

Shen Jia and Yiyou have springs;

Xu Bing and Dinghai, using the soil on the house;

Five sons, ugly, thunder and fire;

Geng Yin, Xin Mao, with pine and cypress;

Chen Chen, your company, has regular tap water;

Wu Jia, Yiwei, sand with gold;

Bing Shen, Ding You, with the mountain fire;

Wuxu, Jihai, with Pingmu;

Gengzi, Xin Chou, has soil on the wall;

Renyin, Guimao, with gold foil;

Chen Jia and Yisi have Buddha's light;

Ding Wei Bingwu, Tianhe;

Ji Youwu is a god, and the earth is big;

Geng Xu, Xinhai, with gold;

Renzi, Guichou, Sang Song;

Jiayin, Mao Yi, with big streams;

Chen Bing, Ding Si, use sand;

Wu Wu, I am gone, and the fire is in the sky;

Have a heart of Geng Shen, use pomegranate wood;

Ren Xu, Guihai, the sea is very big.