Introduction to the main hall: The Tongyi doctor’s residence is the former residence of Yang Zanxu, with a total of 80 rooms, 9 halls and 18 patios. The ceiling ridge of the entire building is made of sand and gray sculptures with tall carp grass. The wooden beams, arches, and papayas in the house are all carved with various patterns of flowers and plants, and the craftsmanship is exquisite.