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. (Xinhua/Li Gang)

A military parade is held to celebrate 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. (Xinhua/Zha Chunming)

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. (Xinhua/Pang Xinglei)

Troops are reviewed, as part of the commemorations to mark the 90th founding anniversary of the People's Liberation Army (PLA) at Zhurihe training base in north China's Inner Mongolia Autonomous Region, July 30, 2017. (Xinhua/Chen Jianli)

A military parade is held to celebrate 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. (Xinhua/Wang Jianhua)

A flag guard formation consisting of officers and soldiers from the army, air force, navy and rocket force of the Chinese People's Liberation Army (PLA) attends a military parade to mark the 90th anniversary of the founding of the PLA at Zhurihe training base in north China's Inner Mongolia Autonomous Region, July 30, 2017.The formation was guarding the flag of the Communist Party of China, the national flag and the flag of the PLA. (Xinhua/Wang Ye)

Troops are reviewed, as part of the commemorations to mark the 90th founding anniversary of the People's Liberation Army (PLA) at Zhurihe training base in north China's Inner Mongolia Autonomous Region, July 30, 2017. (Xinhua/Chen Jianli)

 

Twenty-four helicopters fly in the formation of the number "90" symbolizing the epic journey of the People's Liberation Army (PLA) in 90 years during a military parade at Zhurihe training base in north China's Inner Mongolia Autonomous Region, July 30, 2017. China on Sunday kicked off a grand military parade to mark the 90th founding anniversary of the PLA. (Xinhua/Zha Chunming)

Twenty-four helicopters fly in the formation of the number "90" symbolizing the epic journey of the People's Liberation Army (PLA) in 90 years during a military parade at Zhurihe training base in north China's Inner Mongolia Autonomous Region, July 30, 2017. China on Sunday kicked off a grand military parade to mark the 90th founding anniversary of the PLA. (Xinhua/Wang Ye)