Artists perform during the opening ceremony of the Olympic Winter Games Beijing 2022 at the National Stadium in Beijing, capital of China, Feb. 4, 2022. (Xinhua/Yang Lei)

The Chinese national flag is raised during the opening ceremony of the Olympic Winter Games Beijing 2022 at the National Stadium in Beijing, capital of China, Feb. 4, 2022. (Xinhua/Li Ziheng)

Artists perform before the opening ceremony of the Olympic Winter Games Beijing 2022 at the National Stadium in Beijing, capital of China, Feb. 4, 2022. (Xinhua/Wu Wei)

Artists perform during the opening ceremony of the Olympic Winter Games Beijing 2022 at the National Stadium in Beijing, capital of China, Feb. 4, 2022. (Xinhua/Li Ziheng)

Fireworks explode during the opening ceremony of the Olympic Winter Games Beijing 2022 at the National Stadium in Beijing, capital of China, Feb. 4, 2022. (Xinhua/Li Ga)

Actors perform prior to the opening ceremony of the Olympic Winter Games Beijing 2022 at the National Stadium in Beijing, capital of China, Feb. 4, 2022. (Xinhua/Xu Zijian)

Artists perform during the opening ceremony of the Olympic Winter Games Beijing 2022 at the National Stadium in Beijing, capital of China, Feb. 4, 2022. (Xinhua/Xu Zijian)

Artists perform during the opening ceremony of the Olympic Winter Games Beijing 2022 at the National Stadium in Beijing, capital of China, Feb. 4, 2022. (Xinhua/Wu Wei)

Photo taken on Feb. 4, 2022 shows the Olympic rings during the opening ceremony of the Olympic Winter Games Beijing 2022 at the National Stadium in Beijing, capital of China. (Xinhua/Wu Wei)

The Olympic delegation of Greece parade into the National Stadium during the opening ceremony of the Olympic Winter Games Beijing 2022 in Beijing, capital of China, Feb. 4, 2022. (Xinhua/Yang Lei)

Fireworks illuminate the night sky over the National Stadium during the opening ceremony of the Olympic Winter Games Beijing 2022 in Beijing, capital of China, Feb. 4, 2022. (Xinhua/Wang Jingqiang)

Photo taken on Feb. 4, 2022 shows the National Stadium and the Beijing Olympic Tower prior to the opening ceremony of the Olympic Winter Games Beijing 2022 in Beijing, capital of China. (Xinhua/Cai Yang)

Fireworks illuminate the night sky during the opening ceremony of the Olympic Winter Games Beijing 2022 at the National Stadium in Beijing, capital of China, Feb. 4, 2022. (Xinhua/Li Xin)