Is it illegal to close the terrace?

Generally, it is not allowed to close the balcony, because the architectural design does not allow unauthorized changes to the building. Closing the balcony can not only block the noise from attacking the wind and rain, but also play a role in heat preservation. You can see the beautiful scenery outside through the window. After closing the balcony, the window can not only let light and air into the room, but also play the role of communication between residents and the outside world.