Photo taken on April 8, 2021 shows the Boao Forum for Asia (BFA) International Conference Center in Boao Town, south China's Hainan Province. Over 4,000 people will attend the Boao Forum for Asia (BFA)'s annual conference, which is scheduled for April 18 to 21 in Boao, south China's Hainan Province. (Xinhua/Pu Xiaoxu)

Aerial photo taken on April 8, 2021 shows the Boao Forum for Asia (BFA) International Conference Center in Boao Town, south China's Hainan Province. Over 4,000 people will attend the Boao Forum for Asia (BFA)'s annual conference, which is scheduled for April 18 to 21 in Boao, south China's Hainan Province. (Xinhua/Pu Xiaoxu)

Photo taken on April 8, 2021 shows the scenery of Boao Town, south China's Hainan Province. Over 4,000 people will attend the Boao Forum for Asia (BFA)'s annual conference, which is scheduled for April 18 to 21 in Boao, south China's Hainan Province. (Xinhua/Pu Xiaoxu)

People ride bikes at Nanqiang Village of Boao Town, south China's Hainan Province, April 9, 2021. Over 4,000 people will attend the Boao Forum for Asia (BFA)'s annual conference, which is scheduled for April 18 to 21 in Boao, south China's Hainan Province. (Xinhua/Guo Cheng)