“Overall, the number of US-dollar billionaires in China shrank to 753, down 142 from the previous year. China has also lost 432 or just over a third of its billionaires since a peak of 1,185 in 2021, Hurun said.”
https://www.cnn.com/2024/10/30/tech/tiktok-founder-china-richest-intl-hnk
Not as efficient as the Vietnamese technique but a good step I guess.