Introduction to Tianmen Cave: Tianmen Cave is located in the northeast corner of Zhaiding, also known as Dongtianmen. It is a naturally formed strange landscape. The entrance of the cave is opened on the cliff, like a grand city gate, majestic; the most surprising thing is that the top of the cave opens an equally huge "skylight", and there are steps to go up to the top of the village. The entire cave looks like an ancient farmhouse stove, so it is also known as "Guo Langzi" among the people.