I saw your post on r/Chengdu and responded there, but basically there are no real record shops in Chengdu. There are a few dozens shops which have a handful of records, but nothing like what you have in Europe or the states (and even those are disappearing, also). Shipping records to China is possible although shipping items from overseas can be a hassle because of customs.
Get in touch if/when you come to Chengdu, always happy to meet other vinyl DJs. What do you play?