How many houses are built in rural compound with good geomantic omen?

The best geomantic omen is to build houses according to the quadrangle pattern (the north room is the highest, the east room and the south room are relatively low), which was considered as the richest in ancient China. If the courtyard is deep, you can build two hospitals and three hospitals according to the pattern of quadrangles. This is the pattern of the Forbidden City, and so is Wang in Beijing.