The Dragon Boat Festival, also known as the Duanyang Festival, the Dragon Boat Festival, the Chongwu Festival, and the Tianzhong Festival, is a folk festival that integrates worshiping gods and ancestors, praying for blessings and warding off evil spirits, celebrating entertainment and eating. The lunar date is fixed on the fifth day of the fifth lunar month. The Dragon Boat Festival, the Spring Festival, the Qingming Festival and the Mid-Autumn Festival are known as the four traditional festivals in China. The Dragon Boat Festival originated from the worship of natural celestial phenomena and evolved from the sacrifice of dragons in ancient times. On the Midsummer Dragon Boat Festival, Canglong Qisu flew up to the center of the south, and was in the most "righteous" position throughout the year, just like the fifth line of "Book of Changes Qian Gua": "The flying dragon is in the sky". The Dragon Boat Festival is the auspicious day of "Flying Dragons in the Sky", and the culture of dragons and dragon boats runs through the inheritance history of the Dragon Boat Festival. The Dragon Boat Festival is a traditional cultural festival popular in China and other countries in the cultural circle of Chinese characters. [139] Legend has it that Qu Yuan, a poet of Chu State during the Warring States Period, committed suicide by jumping on the Miluo River on the fifth day of the fifth lunar month. Later generations also regarded the Dragon Boat Festival as a festival to commemorate Qu Yuan; In memory of Wu Zixu, Cao E and Jie Zitui. The origin of the Dragon Boat Festival covers the ancient astrological culture, humanistic philosophy and other aspects, and contains p