All thanks to your wonderful US propaganda. Don't be so naive and think US encryted info is so easy to hack. If China can easily hack into your system and steal your data about your 5th gen fighter program, we will not have such a hard time making fighter engine. Or you are going to twist your word, suddenly saying aero engine data suddenly is unhackable? LOL...
We spend billions pouring into resource into space and aircraft study. If you cant accept China real advancement , so be it and get a life! China is here to stay and progress. China is going to overtake US. Its just a matter of short time. Your ignorance opinion is not going to make any difference. Precisely, is the igorant of opinion like typical American like you. China can rise so fast. LOL.. Shall I thank you instead?