CB000519294RU

Hello!
My package has been in Beijing customs since December 8, 2020.
The parcel is not accepted on the plane to return to Russia, because they believe that there is something in the parcel that arouses suspicion among the inspectors.

The parcel contains clothes, shoes, some food, some medicines (allowed for export and import). The package was not handed over to me because they considered it commercial. It contains things that are allowed for import by postal rules.

Is it possible to negotiate with the customs office to open the parcel and confiscate what causes concern? I will give my consent. I really want to get my things back.