Introduction to Chengzhitang: Located in the middle section of Shangshui Town, Hongcun City, it was built in the fifth year of Xianfeng in the Qing Dynasty (AD 1855). It was the residence of Wang Dinggui, a great salt merchant in the late Qing Dynasty. The entire building is a wooden structure with gorgeous interior decorations of bricks, stones and wood carvings. It covers a total area of ​​about 2,100 square meters and a construction area of ​​more than 3,000 square meters. It is a well-preserved large-scale residential building and is known as the "Folk Forbidden City" .