The tax amount I got from the leader of the tax department in Yunnan after several meetings so it is correct for the import duty tax.

I don't know where you found your bike but it is a lot easier for you in Suzhou or Shanghai to find them and of course that was last year... makes a difference...
It would be nice if you could share some specific information about how and where you bought your bike. That would be much more helpful. was it a new bike when you bought it? can you supply a dealer name or what?

Give me some details so I can follow up bitte