Secondly, I don't know how detailed you are. I guess you only searched the patent abstract, so I don't think it's detailed. The published patent documents include abstracts, drawings, specifications and claims (there are no specifications and claims for designs, only brief descriptions and photos or pictures). These contents should be all patent information disclosed by the applicant. There is a patent search column on China National Intellectual Property Administration's website, so you can search the above contents by downloading the special instructions.