(151009) -- SANSHA, Oct. 9, 2015 (Xinhua) -- Photo taken on Oct. 9, 2015 shows a lighthouse on Huayang Reef of China's Nansha Islands. The Ministry of Transport held a completion ceremony for the construction of Huayang and Chigua Lighthouses on Huayang Reef, marking the start of the operation of the two lighthouses. The two lighthouses, as the first civil aids to navigation in the Nansha waters, will greatly improve the navigational conditions and reduce navigational risks and accidents by providing route guidance, safety information and emergency rescue and other public services to passing vessels. (Xinhua/Chen Yichen)(mcg)