Can you open the window on the side of the hall? The side window faces the neighbor's door.

Of course. The window can be opened on the side of the hall, facing the neighbor's door. In architecture, a window refers to an opening built on a wall or roof to let light or air into a room. Historical records show that during the Sui Dynasty in China, there were windows that could be opened and closed automatically in the Guanwen Hall of Weizicheng in Luoyang Palace.