Closed sinking courtyard effect

Quick answer：

The closed sinking courtyard effect refers to the architectural design feature of a courtyard that is enclosed and sunken, creating a private and secluded space. This design often includes elements such as walls, roofs, and hedges to maximize privacy and create a peaceful environment. It is commonly found in traditional Chinese architecture, where it is believed to enhance the flow of 'qi' (vital energy) and promote harmony.