2. It is said that Dayu has three magic weapons to control water: one is the river map and jade slips that Fuxi gave him; Second, Ying Long in the sky paddled the ground with his tail to guide him. Dayu led migrant workers to dig rivers and divert floods along the tail-stroking route in Ying Long. The third kind is the tortoise, which throws the remaining stones and mud into low-lying places.
One day, a black dragon rolled in the flood near the dam, making waves and knocking down the dam that Dayu and others worked so hard to build. Ying Long told Yu Wang that this is a beautiful dragon of seven or eight years old, and the evil soul is too heavy to be corrected. So the tortoise took Dayu to a high mountain and saw the black dragon with a dazzling white horn on its head, frolicking and churning, making waves from time to time.
Extended data
Related background:
Dragon is a totem worshipped by the Chinese nation and a symbol of auspiciousness and grandeur. The common grade types of dragons are double horns, snake body, four legs, scales and strong smell, and the non-standard type is one-horned dragon.
The prototype of the dragon is the beautiful Wayaolong in the "Xinlong" fossil, with double horns. Legend has it that dragons can sow clouds and rain, eliminate disasters and reduce happiness, symbolizing good luck, so it has become a custom in all parts of the country to dance dragons to pray for a safe harvest.
There are more than 300 dragon events recorded in the official history of China, and the legendary literature is even more huge. The most famous topic in ancient times was that Cao Cao of Wei Mingdi led his ministers to watch dragons during the Three Kingdoms period, and asked painters to paint portraits on the spot, and civil servants to recite poems and write poems on them. In some places, there is also a legend that dragons were killed by the sky. The Legend of the Dragon is a folk cultural warehouse in China.
Baidu Encyclopedia-Legend of the Dragon