As email requestd, I send two informations.

1. shipping label with return address
=> Please refer attached file.

2. official delivery provement from the logistic company
=> Please refer below URL that Korean post offices provides.
https://service.epost.go.kr/trace.RetrieveDomRigiTraceList.comm?sid1=6419201151896&displayHeader=N

It is written in Korean. If you need document in English, please use Google translation.

*** That item was reject for delivery.  According to Korea post office, the reason of fail for delivery is that staff in Aliexpress wharehouse reject to accept. ***

That staff accepts only item that has return tracking number starting with 70785~ or 70627~. Retrun tracking number was publish by Aliexpress return system.


As I guess, the way that Aliexpres customer support team is wrong. 
Aliexpress wharehouse in Korea does not accept my item.

Please give me another solution.