A big stall (it's not like a regular restaurant, it's usually outdoors, on the street). It shows a states during the COVID. A state of "As a wall", these unused tables and chairs in the street will be used as a barrier material, using them to form a wall to prohibit people from passing through. We have slowly all become accustomed to these scenes. It reshapes the urban landscape and redistinguishes the streets.

[Rephrased]
The tables in "As a Wall" are referencing tables used by small eateries on the street (in China). During Covid, as these eateries were not allowed to operate, the unused tables and chairs were folded up and placed on the street as barriers, prohibiting people from passing through certain areas. Over time, people started to become accustomed to such scenes. It became an instance of the reshaping of our urban landscape.