Beichuan Qiang Autonomous County, located in the high mountain valley area where the northwest of Sichuan Basin transitions to the eastern Tibetan Plateau, is the main settlement of the Qiang people in my country and the only Qiang Autonomous County in China. It is affiliated to Mianyang City, Sichuan Province, 160 kilometers away from the provincial capital Chengdu and 50 kilometers away from the urban area of Mianyang, China's science and technology city. It has jurisdiction over 22 towns and a total population of 220,000. Beichuan was established as a county in the first year of Tianhe in the Northern Zhou Dynasty, and has a history of more than 1,400 years. In feudal society, it was managed by local chieftains for a long time. In November 1987, the Sichuan Provincial People's Government approved Beichuan to be treated as a minority county. On July 6, 2003, the State Council approved the establishment of Beichuan Qiang Autonomous County. On October 25 of the same year, the people of Beichuan held a grand ceremony to celebrate the establishment of the Qiang Autonomous County. Beichuan, in ancient times, belonged to the Western Qiang, also known as the Western Yi. "Mencius" said: "Yu is a person of the Western Yi." "Historical Records" said: "Yu was born in the Western Qiang." "The Bamboo Annals" said: "Xiu Yi's back was cut open and Yu was born in Shiniu." In the first year of Yuanding of Emperor Wu of Han (116 BC), the northwestern part of Sichuan was set up as a prefecture and county, and Beichuan belonged to Guangrou County of Wenshan Prefecture. Historical records such as Yang Xiong's "Book of Kings of Shu", Qiao Zhou's "Book of Shu", Chen Shou's "Records of the Three Kingdoms", and Li Daoyuan's "Notes on the Classic of Waterways" all record that Yu was born in Guangrou County, and the specific location was Shiniu Kuerping. Beichuan County was established in the first year of Tianhe in the Northern Zhou Dynasty (566 AD). In the eighth year of Zhenguan in the Tang Dynasty (634 AD), the name was changed to Shiquan County by changing the "Shi" of "Shiniu" and the "Quan" of "Ganquan". Since then, historical records have all referred to Shiquan County as the place where Yu was born. In the third year of the Republic of China (1914 AD), it was renamed Beichuan County because it had the same name as Shiquan in Shaanxi. According to ancient historical records, today's Beichuan County should be the hometown of Dayu. Although the legends about Dayu are very old, there are still a lot of legends about Dayu in Beichuan. The relics about Dayu are well preserved in Shiniu Mountain and Yuxuegou. These historical and cultural relics are precious spiritual wealth of the Chinese nation. For thousands of years, the people of Beichuan have always regarded Dayu as their ancestor and ancestral god, and have remembered and commemorated him from generation to generation. Yu, with the surname Si and the name Wenming, was the leader of the Xiahou clan. It is said that he was the great-grandson of Emperor Zhuanxu. His father was Gun and his mother was Xiuji, a woman from the Youshen clan. According to legend, during the time of Yu Shun, Yu's father Gun tried to control the flood for nine years in vain and was executed in Yushan. Yu continued to control the flood. He was away for thirteen years and passed by his home three times without entering. Finally, he diverted the water into the sea and successfully controlled the flood. He guided three rivers (Huang, Ji, Ke) in Yanyu, dredged nine rivers (including Majia River and Tuhai River that flowed through Chiping, and there is a statue of Dayu controlling floods in Guodikou Village) (Majia, Tuhai, Taishi, Fufu, Husu, Jian, Jie, Goupan, Gejin), met one swamp (Leixia), and raised two rivers (Jiang and Huai), eliminated the floods and made them flow into the sea. Since then, the water town has become fertile land, the swamp has become good fields, and people have rested and lived a peaceful and happy life. Yu made great contributions to controlling the floods of the Yellow River and was succeeded by Shun. Qi, the son of Yu, was the first emperor of the Xia Dynasty. He was a wise and holy emperor who was as famous as Yao and Shun in the legendary era of my country. His most outstanding achievement was the control of the floods, which has been praised throughout the ages, and the demarcation of China's territory into nine states. There are different opinions about the birthplace of Yu. Archaeological research in recent years has shown that Yu's hometown is the current Beichuan Qiang Autonomous County of Mianyang City, Sichuan Province. Because of his meritorious service in flood control, later generations called him Dayu, which means the Great Yu. Later, Dayu's son Qi founded the first slave state in my country, the Xia Dynasty, so later generations also called him Xia Yu. Information source: Mianyang Intangible Cultural Heritage Protection Center Information source: Mianyang Intangible Cultural Heritage Protection Center