http://economictimes.indiatimes.com/news/news-by-industry/et-cetera/second-steal...Much like the J-20, it is painfully obvious it is based on the stolen specs of the F-22 and F-35 (China has been stealing specs on them for a while now).
I guess Robert Gates and Obama were wrong, it took much less than 20yrs for others to get 5th gen fighters. This makes 3 foreign ones flying now including the J-20 and the Russian PAKFA T-50.
What puzzles me is that the YF-22 was kept under wraps until it was thoroughly tested...these 3 foreign 5th gens seem to have been unveiled very very early on in their flight testing.
Oh, I have heard some rumblings that the J-20 is having all kinds of major problems like fires, engines dying, etc.