Payoneer is working in China
and I can do it
OK, it's good. Unlikely you will find somebody who will risk by own account. The salary in 10% is nothing for an advanced account.
And if you could find someone even, there's no guarantee that you will save it when you get first statistics some months later that is very important for getting new customers.
I see 2 main problems for you, if you could do it:
1. Create upwork account
2. Withdraw the money
I would recommend next steps. I saw above that you can use vpn in China. So do it. You can start with free vpn, next you can rent some external server and setup your own vpn server there (I use it in Hetzner for 5 euro per month)? Own vpn server will give you free internet, great performance and required security.