New Year's Day history
On New Year's Day, it is said that one of the three emperors and five emperors has a history of more than 5,000 years.
Chinese New Year's Day has always referred to the first day of the first month of the lunar calendar(lunar calendar, lunar calendar).
The calculation method of the first day of the first month was also very inconsistent before the Han Wudi period. Therefore, the New Year's Day and the day of the past are not the same.
The summer calendar of the Xia Dynasty took Mengxiyue(January) as the first month, the Shang Dynasty's Yin calendar took the lunar month(December) as the first month, and the Zhou Dynasty's Zhou calendar took the winter month(November) as the first month.
After Qin Shihuang unified China, Yangchun(October) was the first month, that is, the first day of October was New Year's Day.
From Han Wudi, it was stipulated that Mengxiyue(January) was the first month, and Mengxiyue's first day(the first day of the first month of the summer calendar) was called New Year's Day and was used until the end of the Qing Dynasty.
元旦来历
元旦，据说起于三皇五帝之一的颛顼，距今已有5000多年的历史。
中国元旦历来指的是夏历（农历、阴历）正月初一。正月初一的计算方法，在汉武帝时期以前也是很不统一的。因此，历代的元旦月、日也并不一致。
夏朝的夏历以孟喜月（元月）为正月，商朝的殷历以腊月（十二月）为正月，周朝的周历以冬月（十一月）为正月。秦始皇统一中国后，又以阳春月（十月）为正月，即十月初一为元旦。
从汉武帝起，规定孟喜月（元月）为正月，把孟喜月的第一天（夏历的正月初一）称为元旦，一直沿用到清朝末年。
