Which fairy stepped on the tortoise and the snake?

Zhenwu Emperor, also known as Tian Xuan God, Xuanwu Emperor, Yousheng Zhenjun Tian Xuan God, and Infinite Patriarch, is a famous jade and pure god among Taoist immortals. At present, the main god of Wudang Mountain belief in Hubei Province is Zhenwu Emperor, which is called "Zhenwu Emperor" in Taoist scriptures. Folks call it "demon Buddha, founder, founder". After the Ming dynasty, it had a great influence throughout the country, and the images of turtles and snakes were deeply rooted in people's hearts.