Since ancient times, Laba has been a sacrificial ceremony for ancestors and gods to pray for harvest and auspiciousness. According to the Book of Rites · Suburb Special Animal, the wax offering is "in December, gathering all things together to enjoy the feast." The Xia Dynasty called the wax offering "Jiaping", the Shang Dynasty "Qingsi", and the Zhou Dynasty "Dawa"; Because it is held in December, it is called the twelfth lunar month, and the day of the festival is called the twelfth lunar day.
The Laba Festival in the Pre Qin Dynasty was the third day after the winter solstice. Later, Buddhism was introduced into China. In order to expand its influence in the local area, the Laba Festival was designated as the day when Buddhas became Buddhists. Later, with the prevalence of Buddhism, the integration of Buddha's Chengdao Day and Lasri is known as the "Magic Treasure Festival" in the Buddhist field. It was fixed on the eighth day of the twelfth lunar month at the beginning of the Northern and Southern Dynasties.
According to Shuowen, "Three days after the winter solstice, we offered sacrifices to a hundred gods." It can be seen that the third day after the winter solstice was a waxy day. Later, due to the intervention of Buddhism, it was changed to the eighth day of December. Since then, it has become popular.
