How to change the lock core when the lock tongue is broken?

If the lock tongue is broken, just ask the lock repairer to find an old lock tongue and replace it. If you can't find a separate lock tongue, you need to buy a new lock and replace it. Changing the lock is to remove the screw that fixes the old lock, take out the old lock inside, install a clever lock and tighten the screw, and the new lock can be used normally.