English: On Dragon Boat Festival, Lantern Festival and Mid-Autumn Festival.

Used before Dragon Boat Festival, Lantern Festival and Mid-Autumn Festival. English festival and daily use. For example, it is not used on Teachers' Day. For example, during the Spring Festival, prepositions indicating specific dates and before festivals should be opened. For example, if there is a specific night and both speakers know it, then on should be used before the festival.

In the ancient customs of China, Shangyuan Festival (Tianjie), Zhongyuan Festival (Di Jie, Yulan Basin Festival) and Xiayuan Festival (Shuijie) were called Sanyuan Festival. The formation of Lantern Festival custom has a long process.

According to general data and folklore, the fifteenth day of the first month was paid attention to in the Western Han Dynasty. At the beginning of the first month of the first month, Emperor Wu of the Han Dynasty worshipped "Taiyi" in Ganquan Palace. The fifteenth day of the first month is considered as a precursor to worship. But the Lantern Festival on the fifteenth day of the first month is indeed a folk festival after the Han and Wei Dynasties.