Miss Etiquettes practise for the coming Boao Forum for Asia (BFA) Annual Conference in Boao, south China's Hainan Province, March 18, 2016. The BFA will be held here from March 22 to 25. (Xinhua/Guo Cheng)

Miss Etiquettes practise for the coming Boao Forum for Asia (BFA) Annual Conference in Boao, south China's Hainan Province, March 18, 2016. The BFA will be held here from March 22 to 25. (Xinhua/Guo Cheng)

Miss Etiquettes practise for the coming Boao Forum for Asia (BFA) Annual Conference in Boao, south China's Hainan Province, March 18, 2016. The BFA will be held here from March 22 to 25. (Xinhua/Guo Cheng)

Miss Etiquettes practise for the coming Boao Forum for Asia (BFA) Annual Conference in Boao, south China's Hainan Province, March 18, 2016. The BFA will be held here from March 22 to 25. (Xinhua/Guo Cheng)

Miss Etiquettes practise for the coming Boao Forum for Asia (BFA) Annual Conference in Boao, south China's Hainan Province, March 18, 2016. The BFA will be held here from March 22 to 25. (Xinhua/Guo Cheng)

Miss Etiquettes practise for the coming Boao Forum for Asia (BFA) Annual Conference in Boao, south China's Hainan Province, March 18, 2016. The BFA will be held here from March 22 to 25. (Xinhua/Guo Cheng)