My information is that the PAF actually placed a couple of F-16s in PRC and a lot of input into the J-10 materialised from there.
First, there is no proof of physical hardware transfer to PRC, ever. Second, there is no credible proof that teams of Chinese engineers were ever allowed to take apart the F-16 on Pakistani air-bases. Third, There is no credible proof that engineering documents that may have been provided to Pakistan were ever transferred to China. I am not saying that this is impossible, I am just saying that there is no credible proof of such, only rumors which may very well have originated from our neighboring territory to the East.
That said, expertise gained by PAF pilots on the F-16 were almost surely passed onto CAC during the design phase of the JF-17, and maybe even the J-10. In addition, I would be willing to bet that Pakistani engineers and senior technicians, who have years of F-16 and Mirage maintenance experience, would have met with Chinese engineers to discuss aircraft design, especially with regards to the JF-17 and FC-20. There is absolutely nothing illegal or unethical about any of this.
American government, and even Lockheed Martin, would have never agreed to sell us the Block 52s if there were any credible proof of this story.
oh boy; if that is true dont you thing Pak is betraying USA
Even if it were true that Pakistan let Chinese engineers study the F-16, there is still no "betrayal". Pakistan paid for the F-16s, they belonged to us. We even paid for F-16s that we never received, so if anybody was wronged, it was Pakistan. Ideally, it should be entirely up to Pakistan who gets access to those F-16s, however, this world is neither ideal nor fair.
If I were to purchase an Aston Martin DBS (as I have so many times in my dreams), I would be the one to decide who gets to drive it and who gets to work on it, not Aston Martin.
Edit
My dear, the Lavi project which the Chinese purchased off the shelf from Israel, had a lot of American input in it and unlike the Phalcon AWACS, the Americans never objected to it's transfer, unlike the current models, the F-16 in question incorporated 30+ year old tech.
Suffice to say i have even seen images of an F-16 airframe used as a gate guardian in some Beijing park.
Indeed, sir. I am well aware of the links between the Lavi project and Chinese aircraft. MY point was simply that
there is no credible evidence that Pakistan ever allowed the Chinese to reverse engineer the F-16s. Israel is a different country altogether.