Wild ass claim:
classrooms become more student-centered the more "meta" the students are required or enabled to be.
The more types of "speaking about what they are doing" that students are enabled to produce (and the more that type of speaking is rewarded or scored in class), the more they are doing the learning by themselves. You can do it as skills for thinking about what they are doing too, but that thinking has to be displayed in some assessable form anyway, so...
The big thing then is you're teaching skills over knowledge. Which, once again, is tricky in China, and maybe everywhere, because so much of "learning" is conceived in terms of knowledge that people, teachers especially, can be almost incapable of knowing what skills-based education is.