Introduction to Xichen Cave: Sunbin Cave is located on the right side of Shuilian Cave. It was excavated in the Ming Dynasty and built on the mountain. It is three rooms wide, with two stone flagpoles standing on both sides of the cave entrance. There are two rows of six stone couplets in the cave. Each pillar is engraved with couplets and stories about characters. The images are clear, the shapes are vivid, the composition is rigorous, and the carving is excellent. There is a seated statue of Sun Bin inside, which is solemn and solemn.