American Small Business with China-based staff/freelancers

Maybe off topic here. For those who are dealing with staff or freelancers for their small business: How would you deal with staff/freelancers from overseas that you hire to work with you? Paychecks? Taxes? Much of my help will be from China.

To be clear, I may register the business both in the States as well as China, but right now, most of my help by way of employees or freelancers or whomever are based in China. Paying employees or taxes here is simple enough, but what about handling such things for using international talent?

Thanks.