Chinnok looks cool, and is a proven reliable design too.
The most important thing is engine.
What matters is how much of that engine is Chinese tech.
Apart from that, everything else, including general design, are relatively easy.
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On this "copy" thing, I absolutely love it whenever I see China "copied" a world class weapon system.
It's because :
1. It saved money.
2. it saved time.
3. it filled the gap of PLA, making it more powerful.
4. it reflects China's underlying hard cold industrial power, because by definition any world-class weapon system is un-copyable.
5. it reminds us again that LCA Tejas alike made-by-the "UN" -painted-by-India are truly, and even more, stupid in comparison.
6. it helped me identify false flagger Indian trolls on PDF, because their @rses immediately sends out a thick curry smoke.