Wangniangtan is a mythical story that is spread in Dujiangyan City and some areas of the Minjiang River Basin. Dujiangyan City is located on the northwest edge of the Chengdu Plain in central Sichuan Province, at the mouth of the Minjiang River at the junction of the upper and middle reaches of the Minjiang River. It is under the jurisdiction of Chengdu City. It is 48 kilometers southeast of Chengdu, the capital of Sichuan Province. It lies between 30443122 degrees north latitude and 1032510347 degrees east longitude. The terrain in the territory is high in the northwest and mountainous, and low in the southeast and plains. It belongs to the subtropical humid climate zone. The Minjiang River enters the city from the northwest and exits the city from the southeast, with a flow of 47 kilometers, dividing the city into two major regions: Hexi and Hedong. The mountains in Hexi belong to the eastern branch of the Qionglai Mountains, with the highest altitude of 2,434 meters; the mountains in Hedong belong to the western branch of the middle and southern sections of the Longmen Mountains, with the highest altitude of 4,582 meters; the plain area is the northernmost vertex of the Dujiangyan City Water Conservancy Project and spreads to the east and south. The mountainous areas in the territory are full of peaks and ridges, deep canyons and beautiful scenery. It is said that "Qingcheng is the most secluded place in the world". The river and canal systems in the plain area are crisscrossed like a spider web, with convenient irrigation and developed agriculture. Dujiangyan City has a long history and rich cultural heritage. Qingcheng Mountain in the city is the birthplace of Taoism in China. Together with Dujiangyan, the crystallization of ancient Chinese science and technology, it has been listed in the World Cultural Heritage Protection List. Dujiangyan City is a national historical and cultural city, a national advanced cultural city, and the most charming city. Since Dujiangyan City was the main activity area of the ancient Shu people as early as the Neolithic Age and the source of the ancient Jiangyuan civilization, especially the thousands of years of water control history of the Chengdu Plain, it is inseparable from Dujiangyan City, thus giving rise to mythical stories such as "Wangniangtan". The story of Wangniangtan tells that a long time ago, there was a mother and son in Guan County who depended on each other for life. The son was very filial and supported his mother by cutting grass and selling it. There was a clump of grass growing very lushly where the son often mowed the grass. It was mowed the day before, and a new clump of grass grew the next day. It was green even in winter. The son was very curious. He pushed aside the grass and found a shining pearl. The son took the pearl home. He had nowhere to put it, so he put it in an empty rice cabinet. The next day, the mother opened the rice cabinet and found a full cabinet of rice. The mother and son never had to worry about food and clothing from then on. The news of this incident reached the local bully, who brought people to rob the pearl. In desperation, the son swallowed the pearl into his stomach. Afterwards, the son was thirsty. He drank all the water in the water tank but it didn't quench his thirst. He drank all the water in the ditch but it didn't quench his thirst. Seeing that her son was in pain, the mother helped him to the Minjiang River and leaned over to drink water. The son who was lying on the river bank drinking water turned into a dragon and swam into the river. The mother hugged her son's feet and couldn't bear to let him leave. The son broke free from his mother and swam away. The mother called her son on the shore, and the son kept looking back at his mother. The mother called her son 24 times, and the son looked back 24 times. Every time he looked back, a river beach appeared, forming 24 beaches. This is the origin of Wangniang Beach. The son turned into a dragon and hated the villagers for forcing him to separate from his mother. That night, a flood occurred, drowning his enemies and the crops, and he became a wicked dragon. Later, he was subdued by Li Bing and his son and locked under the pile. The myth of Wangniang Beach developed from the more ancient myth of Qi Xiang who stole the black pearl of Emperor Huangdi and fell into the Minjiang River and died, and then turned into a dragon to help Dayu control the flood. However, the story of Wangniang Beach is full of touching feelings of life and death between mother and son. In particular, the scene of the son who turned into a dragon looking back at his mother 24 times in the river and couldn't bear to leave is the core of the story full of human touch. Dujiangyan's "24 Wangniang Beaches" has become a local allusion. The story tortuously reflects the history of floods and flood control in Dujiangyan City and Chengdu Plain that has lasted for thousands of years. It expresses people's hatred for floods and condemns some social factors that cause floods. The deep love between mother and son in the story expresses the helpless and tragic feelings of people in the face of disasters thousands of years ago. It has important cognitive value for the history of flood control in Dujiangyan City and the western Sichuan plain. The stories conveying filial piety culture and social injustice are of educational significance and ideological enlightenment. The beautiful, tortuous and legendary story content has high artistic value. Information source: Chengdu Intangible Cultural Heritage Protection Center Information source: Chengdu Intangible Cultural Heritage Protection Center