A test train runs on the Western Ring Railway in south China's island province Hainan, Dec. 29, 2015. The 345-km Western Ring Railway in Hainan will be put into operation on Dec. 30, completing the world's first high-speed train line circling an island. The western stretch, with a designed speed of 200 km per hour, has 16 stops in six cities and counties, linking provincial capital Haikou with Sanya, a tropical tourist spot. With a land area of 35,400 square km, Hainan is slightly larger than Belgium. A popular destination for beach lovers, it is expected to receive 47 million visitors this year. (Xinhua/Xing Guangli)