https://defence.pk/pdf/threads/myanmar-air-force-first-jf-17b-twin-seater-spotted.609817/page-2
Self denial is bad for you. Maybe you want to claim JF-17 is a Pakistan jet and Chinese has zero input so it doesn't count as Chinese jet and also don't considered export. The engine for that plane is WS-13 engine and not Russian RD-93 engine. Why? Myanmar airforce operate a fleet of Mig-29 and Russian by approving sales of their RD-93 engine for JF-17 is as good as shooting their own foot to create a competitor.
Why showing video is critical? Becos it show the engine is alive and not just paper spec which many self denial like you will brag about non materialise project as working one. Especially demonstrating in an airshow is even more convincing as many difficult moves are made which will stress the engine and put it to test and not to mention the chances of engine failure if happened in front of a big crowd and yet PLAAF still proceed. It just show the level of reliability and confident of Chinese made engine.
The only one in self denial is you. I don't rule my head by nationalistic sentiment. I judge by facts. The video and links I provided are facts. China is another level above turkey.. No denial.
If export a product is needed to prove it working then by your theory, F-22 raptor is faked since it has never export?