It whouldent suprice me if there whill come a prototype that looks so simmilary to the F-22. Just look in the history of Chinas homebuild combat aircraft and you see that many of them are build in licence, or copied and futured developed like the Nanchang Q-5 that come from MIG-19, FC-1 "Chao Qi" that come from MIG-21 and Chengdu J-10 that come from IAI Lavi whitc also have some resembling from the F-16.