Tourists enjoy the seaside of Sanya, south China's Hainan Province, Dec. 1, 2012. Sanya has always been a winter tourism preference thanks to its tropical climate. (Xinhua/Hou Jiansen)

Tourists visit the Nanshan Temple resort in Sanya, south China's Hainan Province, Dec. 1, 2012. Sanya has always been a winter tourism preference thanks to its tropical climate. (Xinhua/Hou Jiansen)

Tourists visit the Tianya Haijiao ("Edges of the heaven, corners of the sea") resort in Sanya, south China's Hainan Province, Dec. 1, 2012. Sanya has always been a winter tourism preference thanks to its tropical climate. (Xinhua/Hou Jiansen)