Instead of worrying about it every day, it is better to do a good job of defense first, mow the grass and lose your heel, so you are not afraid of retaliation.
Ways to deal with bad people
Mowing and heel
See who he usually associates with, be wary, gradually establish a self-centered interpersonal circle, and fuck him if you have the opportunity (if you are impatient, you can create opportunities).
Make a careful plan, consider all possibilities, ensure absolute success, and don't get caught with evidence.
The specific operation depends on the target's personality, environment, status, living and working habits and recent experience.
If you have a kind heart, try to cut off his tongue.
A creature like a dog doesn't deserve the rights of its owner.
Otherwise, if you treat a villain like a gentleman, what do you take to treat a gentleman, and what do you take to ensure that others will treat you like a gentleman?