background
Will the other party know about updating their avatar after deleting the other party?
experiment
After experimenting, it will. That is, A deletes B. After A updates the avatar, B can still find that the other party's avatar has been updated (the update of the avatar will only be triggered when B clicks to enter the details page of A, which usually takes a period of time after A changes the avatar, such as ten or twenty. The update can only be found after seconds, the delay is actually very short)