By Zhang Yun | China Daily | Updated: 2021-06-07 08:15 Share CLOSE US President Joe Biden delivers remarks on his administration's coronavirus disease (COVID-19) response, as Vice President Kamala Harris stands by in the Eisenhower Executive Office Building's South Court Auditorium at the White House in Washington, US, June 2, 2021. [Photo/Agencies] US President Joe Biden claims to have abandoned his predecessor Donald Trump's "America first" policy and returned to multilateralism. Considering China's continuous emphasis on multilateralism, its relations with the US should have improved and bilateral cooperation returned on track had Biden's claim been true. But that has not been the case, partly due to the difference in the two governments' understanding of what multilateralism means.