How to cut off all contact with a person?

It depends on whether you have the possibility of meeting that person on a regular basis. If you really want to cut it off and it is your own initiative to cut it off, then delete all possible online contact methods such as WeChat and QQ. The phone address book contains all the photos of the two of you and the software you used together. If you can see them when you are commuting to and from get off work, you might as well quit your job and move to a new environment to make it easier to forget and cut off the thoughts of a person. But you can't stop this person in your heart. Even if you lose contact with the outside world, it's useless to still have his shadow in your heart. The best way to cut it off is to let go. If you can let go from the bottom of your heart, not caring may be more effective than cutting off