''Mass production'' have different meaning for different company
For TOGG 80k per year is ''Mass production'' for TOYOTA or VW it must be 500K.
If KE 4-6/m i guess is ''Mass production''
J35 is the downgraded jet just like JT17 not the edge stealth aircraft j20
After around 2035 we will selling KAAN but 2030 too early even without any delay(hope no delay like Atlay and TF2000)
Before that Pakistan needs jet to replace their current fleet.
We will start to produce KAAN after 2028 at a rate of 2-4 Jets per month; Mainly for TAF,
Pakistan can only get very few KAAN, if they can, so they will buy J35 too I guess
Information of Chinese often unclear and propaganda but as they made J20 and the engine I guess they can promote J35 to international market when KF21 and KAAN about to ready,even J35 can be has still many problems
In this period that s stupid to admit any legally lease,this word had a colour of colonial era.Just need to do but not admit.
Maybe the investment on infrastructure is undergoing.