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There are two screws on the handle behind the door, and add some oil (except cooking oil) to the handle to remove the safety bolt or clean up the rust stains.
It takes a bit of patience to remove the hand and put it back in, and the upper and lower screws are not easy to align with the holes.
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Apply a pencil to the lock point.
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Dear, I suggest you try it with some oil.
First of all, don't break the key, find a hammer to smash the lock around, the action is subject to not destroying, and then turn the key. The lock is out of order, and it shakes the man.
It should be the small deadbolt on the side of the door leaf, which does not match the keyhole of the door frame, and when you twist the small knob, the deadbolt can't get in, so you can't screw it.
It is estimated that the hook on the door has fallen off, which is very troublesome, you use something to pad the cloth and knock it, shock and shake, and see if it can be recovered? If it doesn't work, find a member piece from the inside by the crack in the door, and try it by inserting it along the slope of the key. Of course, you first have to twist the key to the angle of unlocking. >>>More
Let's find a professional lockpicker.
If it is the original key, then you can blow a little pencil lead ash into it to estimate that the problem can be solved. It's about cutting the pencil lead into powder.