The basic unit of an “all water into the hall” house is jian, which is a type of small room. The number of the rooms in a house should be an odd number, usually three or five. Each individual house is connected by corridors to form a closed courtyard with courtyard walls. For open circulation, there are grilles in the courtyard walls and windows in the front and rear of the home. The “all water into the hall” house adapts to local landforms and hypsography and makes full use of the space, aiming to create a free and pleasant architectural style.