Teachers and students pose for a group photo at Yongxing School in Sansha, on Yongxing, one of the Xisha islands, south China's Hainan Province, Dec. 12, 2015. Yongxing School, including a primary school, a kindergarten and a vocational education center, opened this week in Sansha, China's southernmost island city administered by Hainan Province. (Xinhua/Zhao Yingquan)