Introduction to Tianchuang Pavilion: Tianchuang Pavilion is the eye to the sky for stone mining in the Yuan and Ming Dynasties. Next to the passage to Shiyanyan, there are huge stone blocks on the hillside, which are hollow into a rectangular grid like the mouth of a well. When you look down, you can see that the grid is deep. It is more than ten feet long, with two sides cut straight like a split. There is a deep pool below, with light visible, and it is extremely thrilling.