The door handle is broken

         There are actually many coups for opening the door when the door handleis broken. The easiest and most convenient way is to use an IC card (identity card, bank card, etc.) to slam into the tongue of the lock. The above method has limitations. Shake the handle violently until it loosens, then look at the structure of the lock. Generally, there is a fixed place in the lock bowl, and the screw has a clip. Then remove the lock handle, and you can see the lock tongue inside. You need to use pliers and other tools. Pull the tongue out and open it. 

           If the method introduced to you above cannot open the door, then we can call the maintenance department and ask them to repair it immediately, or you can take out the manual and try it yourself. The door handle is installed on the side of the handle. The fixing screw is locked, the T20 tool can be operated, and the screw hole has a rubber plug on the side. You can use the tool to loosen the screw inside after removing it. The screw cannot be unscrewed, then pull the handle and put it next Remove the lock block, and then pull the handle back to remove it.