According to historical records, ancient emperors often offered sacrifices to the moon, and the date was set at 15 in August of the lunar calendar. Because it is half that of Sanqiu, it is called Mid-Autumn Festival.
The word "Mid-Autumn Festival" originated in Zhou Li. The Book of Rites records that "the son of heaven is in spring, the sun and the moon are bright, and autumn is the month. The Asahi is facing the DPRK, and the evening is in the evening. " Therefore, in the Zhou Dynasty, there was already a ceremony for the son of heaven to go to Yue Bai on the Mid-Autumn Festival. The Mid-Autumn Festival began in the early years of the Tang Dynasty and prevailed in the Song Dynasty. By the Ming and Qing Dynasties, it had become one of the traditional festivals in China, which was as famous as the Spring Festival.
Extended data
Poetry related to Mid-Autumn Festival: "Guizi in Tianzhu Temple on the night of August 15th"
I. Sources
Seven-character quatrains written by Pi Rixiu, a writer in Tang Dynasty.
Second, the original text
Yu Xing got off the moon wheel and picked up the dew in front of the temple.
So far, the sky doesn't exist, but Chang 'e should be thrown to people.
Three. translate
The petals of osmanthus falling in succession are scattered from the moon like jade beads. I went to the front of the hall and picked them up. I saw only a few dewdrops on the petals.
Up to now, I don't know what happened in the sky. I think these osmanthus flowers with dew should be thrown to us by Chang 'e of Guanghan Palace.
Baidu Encyclopedia-Mid-Autumn Festival