C129 Hurricane Leopard 2
It was not a problem to exchange for a finished product. In 2020, the J-10 did not enter the weapon graveyard, but the prototype of the early experiments could be exchanged.
At the same time, there were definitely many weapon cemeteries in Eagle Country like the F-15 and F-16. They could all be obtained and studied.
This was the help that Qin Guan could provide now. However