1 Because the payment is not made in cash, but through the bank account, and because all accounts are now opened by the real-name registration system, the payee will definitely find it.
If the payee admits to having a relationship with your former vice president, then find your former vice president through the payee.
If the payee doesn't admit that he has anything to do with your vice president, then directly ask him to return the unjust enrichment. If the payee doesn't pay it back, sue him.
If you don't want to sue, just spend some money to find some gangsters to deal with him.
If the other person is tougher than you, you can find a tougher one.
If you can't find anything tougher, you should consider yourself unlucky.