What beast is this? I saw it in Dujiangyan.

This is the legend of the dragon turtle, one of the nine sons of the dragon. It is also called dragon turtle. It is an auspicious beast recorded in ancient books in China. According to legend, it is one of the "Nine Dragons". As a turtle, it is a pure yang beast, which can ward off evil spirits, reduce evil spirits, dispel evil spirits, dispel evil spirits, and gather wealth. It is a symbol of strength and longevity. Some say it evolved from Xuanwu among the four great beasts, while others say it is directly combined with totem. In geomantic omen, it is auspicious to have four spirits: dragon, phoenix, qi and tortoise. Among them, "dragon" stands for the Ninth Five-Year Plan, which means dignity, and can attract noble people to defend themselves against villains and prosper. "Turtle" represents longevity and peace, and has the function of turning evil into evil. Dragon turtle is a combination of dragon and turtle, so it is more spiritual. It is one of the favorite mascots of ancient emperors, and it is the most powerful geomantic treasure-house to alleviate disasters, enhance popularity and welcome nobles. A pair of dragon turtles were placed at the entrance of the Forbidden City in Beijing. In addition, because "Dragon Turtle" and "Rong Gui" are homophonic, so Dragon Turtle also represents "returning home with clothes on, returning home with honor". For "outsiders" who go out to work hard, or business people who have to face performance pressure every day, it can also help their performance to flourish, their financial resources to expand, and their honor to return.