1. Generally, the door lock cannot be opened due to external force, perhaps because the lock tongue inside is unhooked, or the lock tongue is distorted in shape and the screw fixing the lock tongue falls off, which causes the door to jam and the door cannot be exited. If you go in, you can't get in.

1. Clean up the floor drainThe floor drain in the bathroom has a stinky smell, most of which are foreign objects in the sewer pipe and attached to the inner side of the pipe wall. They cannot be washed away by the force of the water. Therefore, a pipe dredging agent is required to clean up the dirt.

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You can use the key to open the door first, because if the internal lock core is twisted and stuck, it will not rebound. At this time, you need to add some edible oil or pencil lead powder to the lock core to lubricate it to restore it. If the handle is tight and does not rebound, you can try to twi

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