A journalist walks into the media center in Boao Town of Qionghai City, south China's Hainan Province, March 25, 2019. The BFA annual conference will be held in Boao from March 26 to 29 under the theme of "Shared Future, Concerted Action, Common Development." (Photos: Xinhua)

Medical staff of the Boao Forum for Asia (BFA) are seen on duty in Boao Town of Qionghai City, south China's Hainan Province, March 25, 2019. The BFA annual conference will be held in Boao from March 26 to 29 under the theme of "Shared Future, Concerted Action, Common Development."

Staff members work at the registration center of the Boao Forum for Asia (BFA) in Boao Town of Qionghai City, south China's Hainan Province, March 25, 2019. The BFA annual conference will be held in Boao from March 26 to 29 under the theme of "Shared Future, Concerted Action, Common Development."

A staff member checks chairs in the main venue of the Boao Forum for Asia (BFA) in Boao Town of Qionghai City, south China's Hainan Province, March 24, 2019. The BFA annual conference will be held in Boao from March 26 to 29 under the theme of "Shared Future, Concerted Action, Common Development."

Photo taken on March 25, 2019 shows the International Conference Center in Boao Town of Qionghai City, south China's Hainan Province. The BFA annual conference will be held in Boao from March 26 to 29 under the theme of "Shared Future, Concerted Action, Common Development."

Aerial photo taken on March 13, 2019 shows ships patrolling in Boao Town of Qionghai City, south China's Hainan Province. The BFA annual conference will be held in Boao from March 26 to 29 under the theme of "Shared Future, Concerted Action, Common Development."