What you want to ask is what is the name of the place where rainwater is stored in the rural areas of southern Shanxi? Underground courtyard. The underground courtyard is also called Pit Courtyard and Sink Kiln Courtyard. There is a shortage of water resources in rural areas of southern Shanxi. The builders of underground courtyards use groundwater resources to store rainwater for daily life. They dug deep pits in the underground courtyard, painted the walls with lime mud to store water, and set drainage channels under the doorway to prevent rainwater from accumulating.