"Pangu Wang Biao" and "San Tong Ming Hui" are recorded. In ancient times, the Yellow Emperor invented heavenly stems and earthly branches. The ancients took heavenly stems and earthly branches as the carrier, and the heavens and the earth supported the way of the earth, and set up heavenly stems and earthly branches to contract the fate of heaven and earth.

Ancient people used heavenly stems and earthly branches to represent calendar year, calendar month, calendar day and calendar time. According to the calendar, according to the order of the twelve earthly branches, May is called "noon month" and noon day is called "heavy noon", so the Dragon Boat Festival is also called "Duanyang".

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There are many opinions about the origin of the Dragon Boat Festival, such as: in memory of Qu Yuan; In memory of Wu Zixu's theory; In memory of Cao E; From the three generations of summer solstice festival; The theory of exorcising evil days on the moon, the theory of national totem sacrifice in wuyue and so on. Each of the above has its own source.

According to more than 100 ancient books and archaeological studies by experts listed in Wen Yiduo's Dragon Boat Festival Examination and Dragon Boat Festival History Education, the origin of the Dragon Boat Festival is a totem festival held by Wuyue people in the ancient south of China, earlier than Qu Yuan.

But for thousands of years, Qu Yuan's patriotic spirit and touching poems have been deeply rooted in people's hearts. Therefore, the theory of commemorating Qu Yuan has the widest and deepest influence and occupies the mainstream position. In the field of folk culture, China people associate dragon boat racing and eating zongzi on the Dragon Boat Festival with commemorating Qu Yuan.