What do the white, ecliptic and greenway mean in astronomy?

"The ecliptic auspicious day" is China's ancient theory of choosing a day. The ancients thought it was an auspicious day to do things, and both officials and people believed it. The so-called work includes civil weddings, funerals, going out, promotion, taking office, sending troops, breaking ground, opening ceremonies and so on.

In ancient times, "auspicious day" was defined as a day when everything was all right and there was no danger to avoid.

"The ecliptic" is the vocabulary of China's ancient calendar. The name of this calendar is called "Yellow Calendar" in history. Legend has it that the calendar was founded by Xuanyuan, the Yellow Emperor. Historians of all previous dynasties believed that it was not founded by Xuanyuan Huangdi, but later generations, only in the name of Huangdi. But there is no doubt that China was built for the ancients and has a very long history.

The word "ecliptic" is understood in modern times as a complete circle in the direction in which the sun observes the earth in one year. In scientific terms, what the earth people see is the apparent path of the sun between stars in one year, that is, the great circle where the earth's orbital plane intersects the celestial sphere. The ecliptic and the celestial equator form an included angle of 23 degrees and 26 minutes, which intersect in vernal equinox and vernal equinox. At any moment, the trajectory plane that only considers long-term motion is called instantaneous average trajectory plane.

So the ecliptic is an astronomical term, which refers to the orbit formed by the earth's rotation around the sun, and observes the movement of the sun and the earth from the relative position of the earth. This was recorded by our ancestors a long time ago.

People changed the general book to win, which means "everyone can win" and everyone can beat the competitors. But for some ordinary people, living a stable life is quite satisfying. There is not so much competition strength to beat others. I think "Shu Tong" is a good name. If the children at home can "read the whole book", that is, read the whole book, it is also a good thing, and there is hope at home. So, people still have this name. Now people may think this statement is ridiculous. But in the old society, homophones and homophones between these words were one of the folk taboos. For example, people's taboos on the numbers "four" and "scattered" and fishermen's taboos on "turning over" and "chopsticks" (touching and hitting stones). This is a common social psychology in ancient times.

The origin of this statement is very complicated, but in the final analysis, the statement of seeking good fortune and avoiding evil comes from persistence and speculation. Although our ancestors cared about these things, they only cared about them in their leisure time. Everything that is really in crisis is "cheap".