What I sent from Japan was detained by Wuhan Customs. I asked to go back to Japan and paid the handling fee. But on the way back to Japan, I was checked by Beijing.

1: Being detained by Wuhan Customs, you should go to Wuhan Customs to go through the formalities, which is none of Japan's business (unless your goods need export tax).

2. There is no handling fee, only customs duty, value-added tax and consumption tax (these three taxes are the channels for goods, and there are also some shipping fees (which can be ignored)); Postal tax (postal channel and only tax).

For details, please consult the customs service hotline (area code+12360).