Their reliability still sucks when compared to ours, but it's a little better than the issues Russia has. They use the same engines, so they see a lot
of the same problems, but they have a better MTBF rate.
This aircraft looks exactly like the Russians except for a few alterations, makes me wonder if it was just acquired by the Chinese rather than built.
A Jet Fighter isn't just about looks either, they have to master everything inside the cockpit and out.
Most Chinese aircraft are either license built or direct copies of Russian aircraft with improvements using Chinese engines and equipment. It's caused
both embarrassment for the Chinese, and anger for the Russians.