Subterranean shopping mall sunken courtyard illustration

Quick answer：

A subterranean shopping mall sunken courtyard is a design feature where the mall's courtyard is situated below ground level, creating a unique architectural space. This design can enhance the shopping experience by offering natural light, ventilation, and a sense of openness. It is commonly used in urban areas where space is limited and above-ground construction is impractical. The illustration would depict the layout, structure, and aesthetic elements of such a courtyard.