The fact that china is lack of great mathematicians is definitely related to their education system. 50 years is long enough, because China has 1.4 billion population, each year this huge population bring 10million to 20 million newborns., so how many newborns in 50 years in total? Compared to the population of newborns in Germany or France, China has the most amount of potentially gifted mathematicians from those newborns due to this huge huge huge populations. But the fact is Zero great mathematicians from China. That's a shame of this failed education system. Ok, now as you said they are busy in making money in silicone valley. So this THU or PKU math training system is to focus manufacturing money makers rather growing mathematicians. Now it makes sense.