2. Dragon Boat Festival, also known as Duanyang Festival, Dragon Boat Festival and Tianzhong Festival, originated from the worship of natural phenomena in ancient times and evolved from Dragon Boat Festival. On the Mid-Summer Dragon Boat Festival, the black dragon soared for seven nights in the south of the sky, which is the most "right" position in a year, that is, as the fifth divination in the Book of Changes said, "the flying dragon is in the sky". Its origin covers ancient astrological culture, humanistic philosophy and other aspects, and contains profound and rich cultural connotations. In the process of inheritance and development, a variety of folk customs are integrated, and the festival customs are rich in content. Picking dragon boats and eating zongzi are two major customs of the Dragon Boat Festival, which have been passed down in China since ancient times and have never stopped.