Introduction to the Ancient Cave Wizard: "Liyin Cave" is a hundred steps away from Ruquan. It is made of huge stones. It is said that it was the place where Li Mingyuan, the imperial censor of the Tang Dynasty, lived in seclusion after being frustrated in officialdom. The cave is more than ten meters high and ten wide. A few meters wide, the entrance of the cave looks small from the outside, but it is spacious and open inside. At the entrance of the cave are the three words "Li Yin Cave" engraved on the wall, and there is also a seven-rhythm inscription in memory of Li Mingyuan, the imperial censor of the Tang Dynasty. One of the eight scenic spots in Xishan is the "Ancient Cave Wonderland".