The origin of the Double Ninth Festival can be traced back to the early Han Dynasty. It is said that in the palace, on September 9th every year, you should wear Cornus officinalis, feed it with bait and drink chrysanthemum wine to live longer. After the love princess Qi of Emperor Gaozu Liu Bang was killed, the maid-in-waiting Jia was also expelled from the palace, and this custom spread to the people. The Double Ninth Festival was mentioned in Chu Ci during the Spring and Autumn Period and the Warring States Period. Qu Yuan's Journey wrote: "Set Chongyang into the Emperor's Palace and see the capital of Qing Dynasty ten days later." The "Double Ninth Festival" here refers to the sky, not just festivals. In Nine Days Zhong You written by Cao Pi, Wei Wendi in the Three Kingdoms period, it was clearly written that the Double Ninth Festival: "From the year to the month, I suddenly returned to September 9. Nine is the number of yang, and the sun and the moon coincide. It is well known and considered suitable for a long time, so it is a feast. " Tao Yuanming, a scholar in Jin Dynasty, said in the preface to the poem "Idle for Nine Days": "I am idle and love the name of Nine. Autumn chrysanthemums are full of gardens, but they are sad, empty for Jiuhua, and precious words are like gold. " Chrysanthemum and wine are mentioned here at the same time. Probably in the Wei and Jin Dynasties, there was a custom of drinking and enjoying chrysanthemums on the Double Ninth Festival. In the Tang Dynasty, Chongyang was officially designated as a folk festival. In the Ming Dynasty, on the Double Ninth Festival in September, the palace would eat flower cakes together to celebrate, and the emperor would personally climb the Long Live Mountain to celebrate his autumn ambition. This custom has been passed down to the Qing Dynasty.