What's the name of the wall of the concert hall?

Swallow mud. The name of the wall of the concert hall is Swallow Mud. Woolen curtains are often hung on the walls around the concert hall, and the walls will be made into uneven honeycombs, commonly known as mud swallowing. Concert hall is a place where concerts and music-related activities are held, and it is also a place where people feel the charm of music. It usually consists of a concert hall and a small theater, with elegant decoration and proper layout.