The stone forests on the surface of Shihai in Xingwen are beautiful, the huge Tiankeng is magnificent and beautiful. It is called the first treasure basin under the Tiankeng. The underground caves under the Tiankeng are connected by the Tianquan caves. One of the seven halls is connected by the caves. One of the caves has a beautiful view, and the roof of the cave has a natural rectangular skylight. The sunshine pours into the cave with silk water, which makes the silent caves more agile.