Closed sunken courtyard floor plan

Quick answer：

A closed sunken courtyard floor plan refers to a design feature where a courtyard is lower in elevation compared to the surrounding area and is enclosed on all sides by buildings or walls. This architectural element is often used in traditional Asian architecture to enhance privacy, provide a tranquil space, and in some cases, to conserve energy by reducing wind exposure. The plan would typically show the layout of the courtyard, the surrounding structures, and any access points to the courtyard.