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". According to the folk tradition in China, on the festival night in spring returns, the moon is high in the sky, and there are 10,000 lanterns on the ground, so people can watch lanterns, have solve riddles on the lanterns and have Yuanxiao, and have a happy family reunion.

Lantern Festival originated in the Han Dynasty, and it is said that it was set up to commemorate Pinglu during the reign of Emperor Wen of Han Dynasty. After the death of Liu Ying, Emperor Hui of Han Dynasty, Lv Hou usurped power, and the Lushi clan dominated the state affairs. After Lv Hou's death, zhou bo, Chen Ping and others eliminated Lv Hou's influence and established Liu Heng as the Chinese Emperor. Because the day to quell Zhu Lu was the fifteenth day of the first month, after that, every year on the night of the fifteenth day of the first month, Emperor Wendi went out of the palace incognito and enjoyed himself with the people as a souvenir. And the fifteenth day of the first month is designated as the Lantern Festival. During the reign of Emperor Wu of the Han Dynasty, the sacrificial activities of "Taiyi God" were held on the 15th day of the first month. Sima Qian listed the Lantern Festival as a major festival in taichu calendar.