Introduction to the Sutra Collection Building: The Sutra Collection Floor is 5 rooms wide and is a two-story building with a lower cave and an upper pavilion. The upper pavilion has double eaves hanging from the top of the mountain. Six wooden pillars stand in front of the cave to form a building. , the cave is made of bluestone and has a beamless structure. There are Fu Shan's handwritings on the clear stone pillars on both sides of the cave.