Although, it seems that J-16 might have already achieved this, albeit as a 4th gen platform, launching a 5th gen with a mature engine would be a major accomplishment.As far as the fighter is concerned, I’d like to think that they’re taking their time perfecting the development of the J-31/35 in order to achieve their first fighter to initiate production with an indigenous engine. That would signal China’s arrival in the biggest of the big leagues.