Introduction to Longji Ridge: According to legend, the Dragon King of Jinghe in the Tang Dynasty had a duel with Yuan Tiangang and secretly changed the number of rain points. Unexpectedly, the Jade Emperor found out about it, and the Jade Emperor was furious. Inspiring Prime Minister Wei Zheng to enter the Dream Prison to kill the Dragon King. The head of the Dragon King of Houjing River fell on Longshou Plateau in Chang'an, and his body fell on Taiping Valley, turning into a mountain ridge shaped like a dragon's spine. It blocked floods and benefited the people, so people called it Longji Ridge.