A groundbreaking ceremony for the construction of the lighthouses is held on Huayang Reef of China's Nansha Islands, May 26, 2015. China's Ministry of Transport (MOT) on Tuesday hosted a groundbreaking ceremony for the construction of two lighthouses on Huayang Reef and Chigua Reef of China's Nansha Islands. In order to enhance the civil aids to navigation capacity in the waters of Nansha Islands, the MOT plans to construct two multi-functional lighthouses, which will provide efficient navigation service to the passing vessels and "immensely improve the navigation safety" in the South China Sea, according to a statement from the MOT. (Xinhua/Lu Rui)