What does it mean that the problem piece written on my express mail is returned?

There are two possibilities for returning parts: 1. It is possible that the courier lost the parts and neither party called to ask. After a long time, the courier company will return them to you. 2. Even if the recipient can't be contacted, or the address is unknown and neither party has inquired, the courier will return it to you. As for you, you can receive it without writing an address. The courier will contact you then. If you are afraid that you can't get it, you can look it up in the newsletter. com。 Enter the courier on Hao website, find the phone number of your area and call them for enquiry. I hope this helps.