First floor excavation of下沉式庭院real scene

Quick answer：

This refers to a real-life scene of an underground courtyard being excavated on the first floor of a building. It is likely related to home renovation or construction projects where an open space is being created beneath a residential floor.下沉式庭院 (underground courtyard) is a design feature where a courtyard is situated below ground level, often for privacy or aesthetic reasons. This type of construction requires careful planning and structural engineering to ensure stability and safety.