He can simply then follow the law, and send it to HK, then HK to an Exchange, Exchange to Crypto.
Seems pretty straightforward to me.
I imagine he has a wife/parents for the other 70,000$.
For local Chinese people, there is a USD $50,000 annual limit on money transferred outside of Mainland China. For foreigners working in China, the limit on funds is based on how much︀ legal, taxable income you have received in China.Aug 3, 2566 BE
Now if he was︁ in HK, i'd take HKD bank transfer for crypto (50,000) if they came recommended and︂ have source of wealth/funds (likewise would provide).
As HKD is handy to me in my︃ onshore-HKD account as emergency medical fees.