A pair of lovers enjoy the sunset on a beach in Sanya, south China's island of Hainan Province, Nov. 20, 2012. Though the winter draws near, the tropic seaside city of Sanya remains warm and attracts many tourists. (Xinhua/Chen Wenwu)

Tourists play on a beach during the sunset in Sanya, south China's island of Hainan Province, Nov. 20, 2012. Though the winter draws near, the tropic seaside city of Sanya remains warm and attracts many tourists. (Xinhua/Chen Wenwu)

Tourists play on a beach during the sunset in Sanya, south China's island of Hainan Province, Nov. 20, 2012. Though the winter draws near, the tropic seaside city of Sanya remains warm and attracts many tourists. (Xinhua/Chen Wenwu)