I personally thought China had Sanda instead of BJJ/judo. They are rank 4 in judo at the Olympics. I saw videos of people doing BJJ and judo and it's every bit like it is in the anglosphere
Less than 1 in 1000 BJJ students get their black belt so jot that down I'm likely to get my black belt in a few months
But more constructively, I saw an interesting conversation regarding the fidelity and information communicated by belts. It was the idea that you have a badge system for people who have been in the sport for a long time without competition results. So you still celebrate long time contribution to the art but you don't make a claim about their martial competency. Maybe you could have gilded belts for universally recognized competition results. So you have 5+ stripes for competency in different sections of the art, gilded lining for comp results, and the normal ranking. It would be more complicated and flashy, so there's pros and cons.
I personally thought China had Sanda instead of BJJ/judo. They are rank 4 in judo at the Olympics.
I saw videos of people doing BJJ and judo and it's every bit like it is in the anglosphere
I am not immune to propaganda
with 1.5b+ people surely they have everything. there are an excess of black belts these days. they're all over the world starting gyms
Less than 1 in 1000 BJJ students get their black belt so jot that down
I'm likely to get my black belt in a few months 
But more constructively, I saw an interesting conversation regarding the fidelity and information communicated by belts. It was the idea that you have a badge system for people who have been in the sport for a long time without competition results. So you still celebrate long time contribution to the art but you don't make a claim about their martial competency. Maybe you could have gilded belts for universally recognized competition results. So you have 5+ stripes for competency in different sections of the art, gilded lining for comp results, and the normal ranking. It would be more complicated and flashy, so there's pros and cons.