Photos of下沉庭院in a one-story villa

Quick answer：

A sunken courtyard, also known as an underground courtyard or basement courtyard, is a design feature where a courtyard is situated below the level of the surrounding ground. It is commonly found in traditional Chinese architecture and has also been adapted in modern residential design. The photos of a sunken courtyard in a one-story villa would likely show a beautifully landscaped space with plants, water features, or other decorative elements, nestled beneath the villa. This design creates a sense of privacy and seclusion, as well as a unique visual contrast between the courtyard and the surrounding property.