The door of the room is locked. How to unlock the lock?

1. When people are inside, find a small wire with a small hole in the neck of the handle. After grasping the handle, pry open the protective cover.

2. There are two fixing screws. Try to turn them away and push out the lock body.

3. When only the oblique tongue is left, find a needle-nosed pliers or a flat screwdriver and pull the oblique tongue horizontally. Don't let go, bounce back and push the door open.

4. When you are outside, hold the handle of the horn lock with olecranon pliers or water pipe pliers and twist it hard. Take it out, then knock out the lock body, and then find a needle-nosed pliers or a screwdriver to beat the hook horizontally. Don't let go. When released, it will bounce back and push the door open.