A national flag-raising ceremony is held at the Tiananmen Square in Beijing, capital of China, Aug. 1, 2015 to celebrate the 88th anniversary of the founding of the Chinese People's Liberation Army, and Beijing and Zhangjiakou's winning the bid for hosting the 2022 Winter Olympics. (Xinhua/Tang Zhaoming)

A national flag-raising ceremony is held at the Tiananmen Square in Beijing, capital of China, Aug. 1, 2015 to celebrate the 88th anniversary of the founding of the Chinese People's Liberation Army, and Beijing and Zhangjiakou's winning the bid for hosting the 2022 Winter Olympics. (Xinhua/Tang Zhaoming)

Soldiers escort the national flag of China during a flag-raising ceremony at the Tian'anmen Square in Beijing, capital of China, Aug. 1, 2015. A national flag-raising ceremony was held here Aug. 1 to celebrate the 88th anniversary of the founding of the Chinese People's Liberation Army, and Beijing and Zhangjiakou's winning the bid for hosting the 2022 Winter Olympics. (Xinhua/Tang Zhaoming)

Soldiers salute during a national flag-raising ceremony at the Tiananmen Square in Beijing, capital of China, Aug. 1, 2015. A national flag-raising ceremony was held here Aug. 1 to celebrate the 88th anniversary of the founding of the Chinese People's Liberation Army, and Beijing and Zhangjiakou's winning the bid for hosting the 2022 Winter Olympics. (Xinhua/Tang Zhaoming)