Many are worried that America's latest protectionist policies could trigger a trade war which might affect global growth. Meanwhile, there's also a feeling in the US that China's accession to the World Trade Organization 17 years ago has had a negative impact on business there. Our senior correspondent, Tian Wei spoke to the vice chairman of the CPPCC Shanghai Committee, Zhou Hanmin about these issues. Zhou has been working on legal issues related to China and the WTO.