Equation
Lieutenant General
It's not just technology. It also has to do with clarity of operational requirements. Right now China does not face a large sustained land threat tthat would otherwise serve to clarify and stabilize operational requirements. Unless China clarifies the requirements herself by making up her mind to do something big with her army, like invading someone, she is likely to "cross the river by feeling the stones", and develop smaller batches of equipment with different mixture of characteristics in order to better explore what meeting each possible operational requirement might entail.
A good example of this would be the former Soviet Union mass produced huge amount of tanks and armored units that fits into the terrain and weather of Europe during the Cold War bordering along most of Eastern Europe.