2. The Dragon Boat Festival, also known as Duanyang Festival, Dragon Boat Festival, Chung Wu Festival, Dragon Festival, Zhengyang Festival and Tianzhong Festival, originated from the worship of astronomical phenomena and evolved from dragon festival in ancient times. On the Mid-Summer Dragon Boat Festival, seven nights in black dragon rose to the south of the sky, which was an auspicious day for the dragon to fly, as the fifth poem in the Book of Changes, Gan Gua, said, "The flying dragon is in the sky". At noon, Long Xing was both "winning" and "getting right", which was a symbol of good luck. Its origin covers the 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 mixed into one, and the content of festival customs is rich. 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.