The other AVIC guy talk about UCAV is not just simply a stand alone equipment, it's a whole large system including UAV, communication/transmission technology, and munitions. The development of UCAV affect many other areas of the military tech industry.
The last part he said with the increasing fleet of Wing Loong, they are getting important feedbacks from user(s), it's very helpful getting more information and important feebacks on how to continue improve the Wing Loong system. Including cases of real sample usage of the UCAV. ( Not exercise or field testing) But no mention of the user is PLA or expert customers.
But I don't know what real experience cases PLA could use UCAV on at this time other than exercise.... maybe anti-terror or just border reconnaissance? The only way they get real combat experience and feedback from expert customers is Pakistan or some Middle-Eastern countries.
The most obvious and notable way the PLA have used UAVs in real operations would have been during disaster relief operations.
You don't always need bullets to fly to get real world operational experience.
A little bit conspiratorial, but it would not be beyond the realm of possibility for Pakistan to allow Chinese UCAVs to engage Uighur terrorists in Pakistani boarder and tribal areas. Especially if it was not publically announced to minimise public backlash in Pakistan.
So long as the PLA strikes are kept clean (ie not civilian casualties), I don't think anyone would care enough to go digging, and in all likelihood, the strikes would just chalk it up as more American drone strike. In this respect, I think active Pakistani ISI support would be far more useful for China than they are for America.
It has never even been hinted that ISI actively support Uighur insurgents against China, nor would they have any reasons for doing so. And having reliable targeting intel from operatives on the ground would make a tremendous difference.
After all, the biggest issue with UCAV use has been reliable target info. Missiles and bombs rarely go astray these days, so the vast majority of civilian deaths have resulted from unreliable targeting information and highly questionable engagement practices (the so-called "double tap" tactic of hitting a target, waiting for first response rescuers to arrive, and then hitting them is a war crime plain and simple.)