The problem with your logic is you are comparing US to "the world" and China as small resourceless player. The case here is more akin to China blocking US produ

The problem with your logic is you are comparing US to "the world" and China as small resourceless player. The case here is more akin to China blocking US products and US blocking china's product. If US consistently blocks without reason, let's say Germany's cars, then I think Germany have ethical ground in blocking US's cars.