Then why is Asia so poor ? Mexico has a much higher per capita GDP than China. Throw in Hong Kong and Taiwan as an aggregate and the Chinese diaspora is still poorer and always will be.
If you start arguing situationality then you have eliminated your own IQ argument.
Also American’s ethnic groupings are non representative samples, as you should know.
There’s more to national wealth that merely IQ. Of course the economic system, and political system too, contribute to wealth as well. At this time, the wealth of China is increasing rapidly, and this in only decades after some changes. Hong Kong is one of the richest places on Earth, and became so after barely 40 years. Compare that with anywhere in Africa. Furthermore, China has a continuous written history spanning thousands of years - who else can claim that accomplishment? Nobody. IQ isn’t everything, but it isn’t nothing, either.