Historical residential courtyards in Dingcun consist of a number of "foursquare" courtyards with buildings on the four directions including the main halls, the wing rooms along the east and west sides, the corridors and the entrance gateways. It has totally 40 complete sets of "four-square" courtyards 598.5 jian (Jian: the smallest unit of a building, approximately 15 square meters each) rooms and covers an area of 48000 square meters.