The undated file photo shows the foundation stone laying ceremony of the support base of the People's Liberation Army (PLA) of China in Djibouti. A ceremony marking the entry of troops into the PLA's support base in Djibouti was held on Aug. 1, 2017 in the base's barracks. The ceremony marked the first time that China has opened a military support base overseas. It will fulfill China's international obligations regarding humanitarianism aid and escort missions in the Gulf of Aden and waters off Somalia. (Xinhua)