There are so-called "three yuan" in China's lunar new year season, which refers to the upper yuan on the 15th of the month, the middle yuan on the 15th of July and the lower yuan on the 15th of October. Shangyuan is also the birthday of Tianguan Emperor. In the Tang Dynasty, it was called Shangyuan, Zhongyuan and Xiayuan respectively on the 15th of January, July and October: Shangyuan worships the heavens, Zhongyuan worships the earth and Xiayuan worships the water, and grand celebrations will be held in the temples dedicated to the three emperors. The birth dates of the three officials are the fifteenth day of the first month, the fifteenth day of July and the fifteenth day of October in the lunar calendar, which are called Shangyuan Festival, Zhongyuan Festival and Xiayuan Festival.

◆ Shangyuan Festival-15th day of the first month

The 15th day of the first lunar month is the traditional Lantern Festival in China. The first month is January, the ancients called the night "Xiao", and the fifteenth day is the first full moon night in a year, so the fifteenth day of the first month is called the Lantern Festival. Also known as "Shangyuan Festival".

Mid-Autumn Festival-July 15th

The Mid-Autumn Festival is scheduled for July 15th of the lunar calendar, commonly known as July 30. Legend has it that all ghosts were released in the underworld on that day, and people generally carried out activities of offering sacrifices to ghosts. Where there is a new funeral, people will go to a new grave, but in general, ghosts and ghosts will be sacrificed at local places. Therefore, it is a festival centered on ghost worship as a whole, and it is the largest ghost festival among the people in China.

◆ Next Yuan Festival-October 15th

October 15th of the lunar calendar is the traditional folk festival of China-Xiayuan Festival, also known as Xiayuan Day and Xiayuan Day. The origin of the next Yuan Festival is related to Taoism. There are three Taoist officials, namely, the celestial official, the local official, the water official and heavenly god blesses the people. The local official forgives sins and the water official relieves Eritrea.