J-20 (recently sighted in Yading airport) in flight!
... and maybe even production rate !
Not sure if CAC is not able to manufacture only so few J-10 per month but - similar to other Chinese factories - the monthly rate seems very low (IMO).
Deino
and in that vein, I would remind all that the initial F-22s are basically hand-built, and that panels from one aircraft, often would not fit another, they got better, and the F-35 has very, very high production tolerances, fifth gens of necessity require much finer production tolerances and are slow in development and building??
USAF now has 100 F-35As on the most sophisticated production line in the world, and NorthRupp builds all the center fuse/wing junctures on a robotic assembly line. All the welding is Robotic and precise, very demanding.