The Double Ninth Festival in September originated from the worship of celestial phenomena, which began in ancient times, spread in the Western Han Dynasty and flourished after the Tang Dynasty. According to the existing historical data and textual research, in ancient times, there were activities of offering sacrifices to heaven and ancestors in the autumn and the season; The ancients offered sacrifices to the Emperor and ancestors when the crops were harvested in September, which was an activity to thank the Emperor and ancestors for their kindness. This is the original form of the Double Ninth Festival as an autumn harvest sacrifice activity. The Tang Dynasty is an important period when traditional festival customs are mixed and shaped, and its main part has been passed down to this day.