Detailed floor plan of an下沉式庭院

Quick answer：

The 'detailed floor plan of an下沉式庭院' refers to a visual representation of a sunken courtyard design, typically found in traditional Chinese architecture. This type of courtyard is designed to be below ground level, often with a roof to create a sheltered space. The floor plan would include details of the layout, such as the placement of structures, plants, and pathways. This design feature is known for its privacy and tranquility, as well as its unique aesthetic appeal.