Looked into the taxes: for regular employees there are 7 brackets. Anything over 80,000RMB (12320 US Dollar) is taxed at 45%. Though it looks like if your income is derived by a company outside China, and you live there for >=1 and <= 5 years, you are exempted from taxes. Freelancers have 3 levels (between 20% to 40%).
[1] https://www.ecovis.com/focus-china/individual-income-tax-iit...