As the US, UK and other nations deal with supply chain issues, how are traders at the top of the global supply chain faring in the world’s largest wholesale market? SCMP reporter Luna Sun details what she's seen and heard at China’s massive Yiwu wholesale market as it deals with power outages,  soaring container costs and ongoing Covid-19 restrictions, and New York correspondent Mark Magnier reports on the US return to the UN Human Rights Council amid escalating tensions with China.