Mall下沉广场手绘

Quick answer：

The term 'Mall下沉广场手绘' refers to hand-drawn illustrations of a下沉式广场 within a shopping mall. Such illustrations often depict the architectural design, layout, and decorative elements of the square.下沉式广场 is a type of public space located below ground level in a mall, which can include features like fountains, lighting, and artistic installations.