Express mail resending problem

Ask him which courier company he left from, and if he lost the courier bill. If there is a courier bill, call the courier company to check the bill number and see if it is still there. If it hasn't been delivered yet, you can directly change the address with the customer service staff, so that you can receive it, and you'd better leave your phone number on it, so that the courier can call you when he can't find a place to deliver it, so as to ensure that the things can be delivered to you. If something is lost, you can ask a friend to claim with the courier. You can also check the single number on the website of that courier company to see if there is any record.