Situated in Hongcun Village of Yixian County in Anhui, the Chengzhi Hall was built around 1855 some 140 years ago as a private residence of the famous Qing Dynasty salt merchant Wang Dinggui. The brick-wood-structure building has a total of 9 yards of different sizes, full layer 7 floors, 60 rooms of various sizes and 60 doors, covering an area of 2,100 square meters, with the building area being 3,000 square meters. The brick, wood and stone carvings of the building are exceptionally exquisite. It is said that the cost of building the Chengzhi Hall was 600,000 liang of silver and all the woodcarvings were finished by 20 craftsmen in 4 years.