Volunteers in costumes of Li ethnic group are seen in the Boao Forum for Asia (BFA) International Conference Center in Boao, south China's Hainan Province on April 17, 2021. The BFA's annual conference, themed on "A World in Change: Join Hands to Strengthen Global Governance and Advance Belt and Road Cooperation" this year, is scheduled for April 18 to 21 in Boao. (Xinhua/Yang Guanyu)
