Toilets in Beijing quadrangles are generally located in the southwest of quadrangles. This layout may be related to the traditional concept of Feng Shui, that is, "taking water as wealth", so the toilet was built in the southwest of the yard, hoping to "retain" more wealth.

To go to the toilet in the yard, you need to go through the narrow aisle first, and then through other areas such as the kitchen before you can reach the toilet. Some quadrangle residents will choose to use purification tanks or "black technology" toilets, but these facilities require certain space and installation conditions, and not all quadrangles can use them.

Generally speaking, the use of toilets in quadrangles may be inconvenient, but this is also one of the characteristics of traditional buildings.