People visit ChinaJoy 2020 in Shanghai, east China, July 31, 2020. Asia's biggest game event ChinaJoy, known as the China Digital Entertainment Expo and Conference, kicked off on Friday in Shanghai. (Xinhua/Fang Zhe)

People visit ChinaJoy 2020 in Shanghai, east China, July 31, 2020. Asia's biggest game event ChinaJoy, known as the China Digital Entertainment Expo and Conference, kicked off on Friday in Shanghai. (Xinhua/Fang Zhe)

A visitor plays table tennis with a robot at the ChinaJoy 2020 in Shanghai, east China, July 31, 2020. Asia's biggest game event ChinaJoy, known as the China Digital Entertainment Expo and Conference, kicked off on Friday in Shanghai. (Xinhua/Fang Zhe)

People take photos of cartoon models at ChinaJoy 2020 in Shanghai, east China, July 31, 2020. Asia's biggest game event ChinaJoy, known as the China Digital Entertainment Expo and Conference, kicked off on Friday in Shanghai. (Xinhua/Fang Zhe)

People visit ChinaJoy 2020 in Shanghai, east China, July 31, 2020. Asia's biggest game event ChinaJoy, known as the China Digital Entertainment Expo and Conference, kicked off on Friday in Shanghai. (Xinhua/Fang Zhe)