One. If the handle lock is broken, how to open it?
1、 Use a narrow, pointed knife. First, position the shackle so that the shackle axis does not come into contact with the locking slot, minimizing friction. Then, insert the knife into the gap in the locking slot and apply pressure to the shackle axis in the direction of its free movement. You may need to try several times to open it.
2. If the door lock cannot be opened manually, please have a family member with the key come and open it.

3. If all other methods have failed, consider hiring a professional locksmith. Locksmiths typically have specialized tools and techniques to open locks, but this service comes with a cost.
Two. Simple trick to fix a stuck door knob
The lock mechanism may be unable to turn due to rust, a malfunctioning component, or a key that has become rusted or damaged due to moisture. If you encounter this issue, you can try the following method:
1、 Take an old pencil and sharpen it. During the sharpening process, do not discard the pencil shavings; instead, attach them to a white paper.
2、Using a straw, insert the tip of the straw into the pencil powder, then place the straw with the pencil powder into the lock.
3. Use the straw to forcefully blow the pencil powder into the lock cylinder, then try turning the key. You should find that the lock can now be turned.