I attended this year's Nanchang Airshow, but I didn't hear anything about the Z-21. I also couldn't find any concrete information on the Z-21's mass production or service entry on Chinese internet sources.
The Z-21 had just conducted its first flight no earlier than December 2023 (i.e. barely nearing 2 years ago), and this guy is claiming that the Z-21 has already been produced in triple digits?
What does he think the Z-21 is? Some kind of MALE/HALE UAV?
Had seen this guy blurting nonsense on PLA-related matters on plenty of instances before. Literally an attention-seeking imbec1le.