Chinese and Pakistan frontier defense forces provide security during a joint patrol at a mountainous region in Khunjerab of Xinjiang Uygur Autonomous Region on August 19, 2016. The joint patrol is conducted by a PLA frontier defense company in Khunjerab and the border policemen of the Pakistani Khunjerab Security Force (KSF), aiming to offer security guarantee to the construction of the China-Pakistan Economic Corridor and the One Belt and One Road (the Silk Road Economic Belt and the 21st Century Maritime Silk Road)Initiatives. (81.cn/Wang Ning)