There's millions of Chinese diaspora who went through relatively zero-sum gaokao and have their kids go through western systems. IMO general consensus will will tell you centralized test will produce superior results but it's so tough / high stakes they won't want to put their kids through it. Many of them are also gaokao flunkies who had alternate pathways in era where with more easy/shady opportunities that are now gated behind actual gaokao performance, and they know statistically their kids can't hack it. So course they want system to be different in the same way US system is different - some nebulous holistic system, aka one where there's ample opportunities for their money to corrupt/capture. TBH last 1000s of years of Chinese history is interrogation of monied merchant class trying to capture (more) merited scholar class, the lessons learned (repeatedly) is venturing away from standardized/merit is just opening up to deregulated corruption.