Hainan offers visa-free travel for one week for citizens of many countries. Interestingly, the U.S. is not one of those countries.

Sanya has become Hawaii for Russians, with many direct flights daily.

Hainan's beaches are the best in China, but they are not world-class. Water quality is variable, almost all coral is now gone, and development has given most beaches a 'Miami Beach' skyline.