Business InsiderThe Chengdu J-20 is China’s fifth-generation fighter, its response to the US F-35 and the Russian T-50. The J-20 is a stealth aircraft that is currently in its fourth round of prototypes.
The J-20 bears striking resemblance to the F-35 and the F-22, likely due to data theft and Chinese imitation of the skeletons of both planes. China may have the design specifications needed to give the J-20 stealth capabilities that are on par with the F-35.
Although the plane is estimated to have a striking range of 1,000 nautical miles, the aircraft itself is still reliant upon Russian engines and in a relatively early stage of its development.
Read more: http://www.businessinsider.com/chinese-military-advancements-2014-10?op=1#ixzz3TUcaePd2
If the Chinese copied the F-35, we have nothing to worry about considering what a boondoggle the F-35 has become. Can’t fly in bad weather, can’t shoot it’s guns, can’t carry the bombload it was designed for. On the other hand, if the Chinese have solved these defects, we have a real problem.