In the Spring and Autumn Period, after Wu Zixu, a loyal minister of the State of Wu, died unjustly, he became a Taoshen and was mourned by the world, hence the Dragon Boat Festival. Dragon Festival, this statement comes from Wen Yiduo's Dragon Boat Festival Examination and Dragon Boat Festival History Education. He believed that the fifth day of May was the day when the "Dragon" tribes in ancient wuyue held totem sacrifices. The main reasons are: (1) Eating zongzi and racing are the two most important activities of the Dragon Boat Festival, both of which are related to dragons. Zongzi is often stolen by dragons when it is thrown into the water, while dragon boats are used in the race. (2) The relationship between race crossing and ancient wuyue is particularly deep, besides, the people in wuyue also have the custom of continuously tattoo to "look like a dragon". (3) The ancient folk custom of "tying arms with colorful silk" was used on the fifth day of May, which should be a relic of the tattoo custom of "like a dragon". Evil day, in the pre-Qin era, it was generally believed that May was a poisonous month and the fifth was an evil day. According to legend, evil was in power on this day, and five poisons came out simultaneously. According to the Book of Rites, the Dragon Boat Festival originated from the orchid bathing in the Zhou Dynasty. A midsummer in Lu's Spring and Autumn Annals stipulates that people should abstain from sex and fast in May. "Xia Xiaozheng" recorded: "Store medicine this day to remove poisonous gas." It is recorded in "Da Dai Li" that "the livestock orchid is a bath on May 5" and there are many legends that the heavy five is the day of death by bathing to exorcise evil spirits. Historical Records and Biography of Meng Changjun, a famous Meng Changjun in history, was born on May 5th. His father asked his mother not to give birth to him, thinking that "a child born in May, who is longer than a family, will be detrimental to his parents." "Custom Tong" is lost, "It is said that having children on May 5th, the male harms the father and the female harms the mother". Wang Chong, the author of Lun Heng, also described: "The first month and the fifth month are taboo; Killing father and mother in the first month and the fifth month is not allowed. " Wang Zhene, a general of the Eastern Jin Dynasty, was born on the fifth day of May, and his grandfather named him "Zhen Evil". Zhao Ji, Song Huizong was born on the fifth day of May, and was fostered outside the palace since childhood. It can be seen that it is a common phenomenon to regard the fifth day of May as an evil day in ancient times. It can be seen that since the pre-Qin period, this day has been an unlucky day. In this way, it is logical to insert Acorus calamus and Folium Artemisiae Argyi to exorcise ghosts, fumigate Rhizoma Atractylodis, Radix Angelicae Dahuricae and drink realgar wine to avoid epidemic on this day. And people also avoid the taboo of "Duanwu" and call it "Dragon Boat Festival".