What does the summer calendar mean?

1. Origin of the summer calendar: Emperor Zhuan Xu and Xia Dynasty both used the summer calendar of Yin Jian, and took the first day of the first lunar month as New Year's Day, the so-called "Yin Jian Mengchun Moon". The Shang Dynasty used the lunar calendar to build ugliness, and the first day of the second lunar month was New Year's Day, which was called "ugly month in winter".

The Qin dynasty used the Qin calendar, built the sea instead of the Zhuan Xu calendar, and took October of the current lunar calendar as the beginning of the year, the so-called "Meng Dong built the sea moon"; It is said that our ancestors used this calendar in all lunar calendars as early as the Xia Dynasty. So people also call it the summer calendar. After liberation, it is still called the summer calendar.

After 1970, China was renamed "Lunar Calendar". As for the origin of the name "lunar calendar", it is probably because the country has been founded on agriculture since ancient times, so the calendar must serve agriculture.

2. In ancient China, divination and astrology were very popular, and astrology played a very important role in imperial power. The calendar changed in every dynasty to meet the needs of imperial power, and the summer calendar was born under such circumstances. For thousands of years, with the change of dynasties, the integration of calendars has become our current lunar calendar. ?

First, clearly define. Do you mean the lunar calendar in use now? If you mean this, it should be the calendar of the Han Dynasty. Although the name of the Han Dynasty comes from the summer, it may actually be a misunderstanding at that time.

As far as the current research on summer is concerned, the year of summer is actually ten months, and the November and December written later were given to Hu Jia by people who don't know.

Joining 1 1 month and1February means joining. I didn't know that the original calendar was ten months. When sorting out the literature, he added two months according to the idea of twelve months, and at that time he used the December calendar, which caused a series of problems:

Who is recorded in the Summer Calendar? Is it really a summer calendar or is it mistaken for a summer calendar?

If it is a summer calendar, then the origin of the December calendar is doubtful, because the December calendar has existed abroad for a long time (even if there is no calendar of 10 months in summer, the origin of the December calendar should be considered). Was it introduced by the merchant?

What does Xia mean by "small"? Does it mean that a calendar with twelve months in a year doesn't often use "small"? Or the comparison between 10 and 12? Either way, we will eventually return to the two questions of 1 and 2.

If it is really the summer calendar, can you confirm that Dayu mentioned by Mencius is Xiqiang? Generally speaking, Dayu is a Shi Niu, that is, the present Wenchuan area, close to the southwest Yi people, and the Yi calendar is divided into ten months a year. That is to say, is it possible that this calendar is the calendar of the early Han and Tibetan nationalities in southwest China, which is different from the calendar in northwest or north, central plains or east?

Is it possible that the early Central Plains and the East, and even the northwest and the north, used the October calendar, and later businessmen or Rong Di introduced the December calendar from the outside (equivalent to the introduction of astronomy, in fact, some of our astronomical terms don't look like Chinese at first glance, such as the wild fall and the photo case)