The DSA has a group that visits Cuba, so perhaps you could go really hard on activism to get into it. Other leftists groups probably also have their own delegations for things like that, though it is unlikely you'll get to China that way afaik. If you're trying to get into China, I think your best hope is through (non-socialist) Chinese cultural enthusiast groups, though I'm just speculating and for all I know Friends of Socialist China has a delegation.
There are probably groups that visit Vietnam, so perhaps if your friend can go to China easily, they could use the rail system to go down near Vietnam and take a short flight in?
The DSA has a group that visits Cuba, so perhaps you could go really hard on activism to get into it. Other leftists groups probably also have their own delegations for things like that, though it is unlikely you'll get to China that way afaik. If you're trying to get into China, I think your best hope is through (non-socialist) Chinese cultural enthusiast groups, though I'm just speculating and for all I know Friends of Socialist China has a delegation.
There are probably groups that visit Vietnam, so perhaps if your friend can go to China easily, they could use the rail system to go down near Vietnam and take a short flight in?