I hate to butt in into the discussion but both you maybe right
Xu Zhengpin in the interview with SCMP did mention that he carted off 40 ton of documentation To china
But we don't know what is the quality of these document Anyway most likely missed a lot fo more important document Then it has to be converted to 3D computer aided design which the Chinese do it themselves. It is monumental job by itself and the drawing mean nothingif you don't have the underlying technology like all the subsystem which the Chinese design it themselves because we know Varyag is just bare hull with propulsion system devoid of any subsystem
It is in no way diminishing Chinese achievement and hard work in getting a rusty derelecit boat inot functioning aircraft carrier. It take them almost a decade of hard work
Anyway it is water under the bridge Now China has the capability of designing any carier and Varyag just shorten the process by 2 decades
The Varyag escapade must be one of the most successfull Chinese intelligence ruse and disinformation campaign. Telling the world it just a scrap yard material by the time they realized what is going on it is too late. It is amazing story of determination and effort of one patriotic overseas Chinese bussinessman single handedly force to change the course of PLAN with his effort and determination grit and gumption,personal sacrifices salute to Xu Zhengpin
Reference
Xu was so impressed when touring the ship that he resolved to purchase it using his personal funds. The previous year, Xu had borrowed HK$230 million from a Hong Kong business friend, spending HK$6 million to create Chong Lot as a Macau . He described a harrowing negotiation in , lubricated by bribery and liquor, which helped to arrange victory at the auction. As a precaution, he shipped 40 tonnes of the carrier's blueprints to China overland in eight trucks.