A flag-raising ceremony is held during a military parade celebrating the 90th anniversary of the founding of the Chinese People's Liberation Army (PLA) at Zhurihe training base in north China's Inner Mongolia Autonomous Region, July 30, 2017. Chinese President Xi Jinping, also general secretary of the Communist Party of China Central Committee and chairman of the Central Military Commission, will inspect the troops and deliver an important speech. [Photo/Xinhua]