The history of twelve stars

In order to observe and explain the position, movement and solar terms conversion of the five stars, the ancient Chinese people divided the zodiac into twelve parts from west to east, and the names were: Astrology, Fu Xuan, Zhanglou, Girder, Stone God, Quail Head, Quail Fire, Quail Tail, Birthday Star, Fire and Analysis Wood. Every time, there are some stars as signs in 28 nights. Because the twelve stars are equally divided, and the widths of the twenty-eight constellations are different, some constellations span two adjacent stars. Tang Lu Deming, the book Yao Dian, Calendar is like the Sun, Moon and Stars, explained: "When the sun meets the moon, it means that the sun meets the moon at twelve o'clock. Yin said to analyze wood, Mao said to fire. Chen said the birthday girl, he said the quail's tail, and at noon he said the quail's fire. He didn't say the quail's head was solid. You said the girder, you said the water drop, the son said the mystery, and the ugliness said the age of the star. " Song Gaocheng's "The Origin of Everything, the Ministry of Heaven, Earth and Vegetation and the Age of the Stars": "The Emperor Century said:' The Yellow Emperor was ordered to divide the Age of the Stars according to law. "Liu Zhao's supplement to Hanshu is also called" The Yellow Emperor Set the Star ". In other words, the twelve degrees of the twenty-eighth house recorded in Erya today were all created by the Yellow Emperor. Chen Zungui's History of Chinese Astronomy, Chapter 11: "At first, Sunday was divided into twelve equal parts along the equator, and it was not until the Tang Dynasty that it was divided along the ecliptic. Therefore, it is more correct to say that twelve o'clock is divided along the ecliptic ... It can be considered that there should be a long period from the creation of the Ten Classics to the formulation of the Twelve Names. That is, the creation of the twelve times was in the middle of the Warring States Period, and it was not until the end of the Han Dynasty that Ban Gu wrote "Hanshu Law and Discipline" that it was recorded twelve times in twenty-eight nights. "