Photo taken on April 5, 2016 shows the lighthouse on Zhubi Reef of Nansha Islands in the South China Sea, south China. China's Ministry of Transport on Tuesday held a completion ceremony for the construction of a lighthouse on Zhubi Reef, marking the start of its operation. The lighthouse can provide efficient navigation services such as positioning reference, route guidance and navigation safety information to ships, which can improve navigation management and emergency response. (Photo: Xinhua/Xing Guangli)
