Introduction to Lotte Chu: Lotte Chu is a cantilevered rock building built on the middle of a steep stone wall. The building has three floors and is more than two feet and four feet high. It faces a wall on one side and windows on three sides. There are three words engraved on the lintel stone of the building door: "Lotte Place". A couplet is engraved on both sides: "There is no joy outside the body, but there is a different world in the cave." There are Bagua diagrams on the roof, and there are beams in the middle for resting the floor slabs. There is a plank road below that leads to the river valley, and a plank road above that leads to the top of the mountain. The terrain here is dangerous, the engineering is solid, and it is convenient for both offense and defense. It is also known as the Tibetan Army Cave. During the Anti-Japanese War, Comrade Wang Quanguo once led his troops to hide here.