PAF recently sent a group of represenatives to CAC. They looked at a few designs for their 4th gen, and in general they were pretty satisfied."Chengdu has an export pre-4th gen (5th gen in US/Russian standard)designated as J-2X.Pakistan and third world countries have demands for it. Of course, 611 can expect to get some order from Chinese air force also. It is about the size of F-35, and the design has already been presented to Pakistan."