A television screen shows Chinese athlete Lyu Xiaojun participating the men's 81kg weightlifting competition during the Tokyo 2020 Olympics, at a Japanese cuisine restaurant in Beijing, China July 31, 2021. REUTERS/Tingshu Wang

A staff member serves customers near a television screen showing Chinese athlete Lyu Xiaojun participating the men's 81kg weightlifting competition during the Tokyo 2020 Olympics, at a Japanese cuisine restaurant in Beijing, China July 31, 2021. REUTERS/Tingshu Wang

Visitors are seen at the Playstation booth during the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

Visitors are seen at the Intel booth during the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

Visitors are seen at the Intel booth during the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

Signs of video game streaming site Huya are seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

A sign of a video game streaming site Huya is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

Signs of AMD are seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

People install a cartoon decoration at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

A view of mobile phones in front of the Xiaomi logo at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

A sign of JD.com is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

The logo of Bandai Namco is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

The logo of internet technology company Netease is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

A sign of AMD is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

The logo of online video service operator Kuaishou Technology is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

A woman wearing a protective mask holds a placard that reads "Always wear face mask, avoid gatherings, wash your hands often." at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

People play mobile games at a booth promoting Qualcomm and Oppo at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

Visitors are seen at the Tencent Games booth during the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

The logo of online video site Bilibili Inc is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

A sign of Qualcomm is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai

The logo of internet technology company Netease is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

A Sign of Youku is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

The Xiaomi logo is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

The logo of online video service operator Kuaishou Technology is seen at the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

A cosplay fan poses for a photo at a Tencent Games booth during the China Digital Entertainment Expo and Conference, also known as ChinaJoy, in Shanghai, China July 30, 2021. Picture taken July 30, 2021. REUTERS/Aly Song

A prison van carrying Tong Ying-kit, the first person charged under the new national security law, leaves the High Court after Tong was sentenced to 9 years, in Hong Kong, China. July 30, 2021. REUTERS/Tyrone Siu

A prison van carrying Tong Ying-kit, the first person charged under the new national security law, leaves the High Court after Tong was sentenced to 9 years, in Hong Kong, China July 30, 2021. REUTERS/Tyrone Siu

Police ask supporters to leave during the court hearing of Tong Ying-kit, the first person charged under a new national security law near the High Court, in Hong Kong, China. July 30, 2021. REUTERS/Tyrone Siu

Police stop and search supporters of Tong Ying-kit, the first person charged under a new national security law, during court hearing outside the High Court, in Hong Kong, China. July 30, 2021. REUTERS/Tyrone Siu

Supporters of Tong Ying-kit, the first person charged under a new national security law, wait for the prison van to leave the High Court, after Tong been sentenced to 9 years in Hong Kong, China. July 30, 2021. REUTERS/Tyrone Siu

Leaflets in support of Tong Ying-kit, the first person charged under a new national security law, are placed at a shopping mall near the High Court, in Hong Kong, China. July 30, 2021. REUTERS/Tyrone Siu

Police ask supporters to leave during the court hearing of Tong Ying-kit, the first person charged under a new national security law near the High Court, in Hong Kong, China. July 30, 2021. REUTERS/Tyrone Siu

Police stand guard outside the High Court during court hearing of Tong Ying-kit, the first person charged under a new national security law, in Hong Kong, China. July 30, 2021. REUTERS/Tyrone Siu

Police stand guard outside the High Court during court hearing of Tong Ying-kit, the first person charged under a new national security law, in Hong Kong, China. July 30, 2021. REUTERS/Tyrone Siu

Police stand guard outside the High Court during court hearing of Tong Ying-kit, the first person charged under a new national security law, in Hong Kong, China. July 30, 2021. REUTERS/Tyrone Siu

Supporters of Tong Ying-kit, the first person charged under a new national security law, queue up for attending the hearing at the High Court in Hong Kong, China. July 30, 2021. REUTERS/Tyrone Siu

Baidu's Apollo car with an autonomous driving system drives past people as they scan a QR code to try its ride-hailing service at the Shougang Industry Park in Beijing, China July 30, 2021. REUTERS/Tingshu Wang

Baidu's Apollo car with an autonomous driving system, which serves for self-driving taxi services, is seen at the Shougang Industry Park in Beijing, China July 30, 2021. REUTERS/Tingshu Wang

A customer walks past a booth displaying Olympic rings above products of The Coca-Cola Company, a corporate sponsor of the Beijing 2022 Olympic Games, at a supermarket in Beijing, China July 30, 2021. REUTERS/Tingshu Wang

Olympic rings are seen above products of The Coca-Cola Company, a corporate sponsor of the Beijing 2022 Olympic Games, at a supermarket in Beijing, China July 30, 2021. REUTERS/Tingshu Wang

Products of The Coca-Cola Company, a corporate sponsor of the Beijing 2022 Olympic Games, are displayed at a supermarket in Beijing, China July 30, 2021. REUTERS/Tingshu Wang

People walk in the headquarters of Beijing Organising Committee for the Beijing 2022 Olympic and Paralympic Winter Games, in Beijing, China July 30, 2021. REUTERS/Tingshu Wang

Visitors are seen next to a sculpture featuring skates outside the headquarters of Beijing Organising Committee for the Beijing 2022 Olympic and Paralympic Winter Games in Beijing, China July 30, 2021. REUTERS/Tingshu Wang

Reporters are seen in front of the Beijing 2022 Winter Olympic and Paralympic Games signs during a news conference on the construction progress of the sports event venues, at the headquarters of the Beijing Organising Committee, in Beijing, China July 30, 2021. REUTERS/Tingshu Wang

Liu Yumin, the head of planning and construction department of the Beijing Organising Committee for the Beijing 2022 Olympic and Paralympic Winter Games, attends a news conference on the construction progress of the sports event venues for the Games, at the Committee’s headquarters in Beijing, China July 30, 2021. REUTERS/Tingshu Wang

A man uses his phone as he walks past signs of the Beijing 2022 Olympic and Paralympic Winter Games at the headquarters of Beijing Organising Committee, in Beijing, China July 30, 2021. REUTERS/Tingshu Wang

Liu Yumin (C), the head of planning and construction department of the Beijing Organising Committee for the Beijing 2022 Olympic and Paralympic Winter Games, speaks during a news conference on the construction progress of the sports event venues, at the Committee’s headquarters in Beijing, China July 30, 2021. REUTERS/Tingshu Wang

A fan of Hong Kong swimmer Siobhan Haughey is stopped by other attendees, as he tries to argue with pro-China supporters (not pictured), during the live broadcast of the Tokyo 2020 Olympic Summer Games women's 100m freestyle final at a shopping mall in Hong Kong, China July 30, 2021. REUTERS/Tyrone Siu

Fans of Hong Kong swimmer Siobhan Haughey watch the live broadcast of the Tokyo 2020 Olympic Summer Games women's 100m freestyle final at a shopping mall in Hong Kong, China July 30, 2021. REUTERS/Tyrone Siu

Fans of Hong Kong swimmer Siobhan Haughey react as they watch the live broadcast of the Tokyo 2020 Olympic Summer Games women's 100m freestyle final at a shopping mall in Hong Kong, China July 30, 2021. REUTERS/Tyrone Siu

Fans of Hong Kong swimmer Siobhan Haughey react as they watch the live broadcast of the Tokyo 2020 Olympic Summer Games women's 100m freestyle final at a shopping mall in Hong Kong, China July 30, 2021. REUTERS/Tyrone Siu

Pro-China supporters argue with supporters of Hong Kong swimmer Siobhan Haughey as they watch the live broadcast of the Tokyo 2020 Olympic Summer Games women's 100m freestyle final at a shopping mall in Hong Kong, China July 30, 2021. REUTERS/Tyrone Siu

Fans of Hong Kong swimmer Siobhan Haughey and pro-China supporters react as they watch the live broadcast of the Tokyo 2020 Olympic Summer Games women's 100m freestyle final at a shopping mall in Hong Kong, China. July 30, 2021. REUTERS/Tyrone Siu

Supporters of Hong Kong swimmer Siobhan Haughey react as they watch the live broadcast of the Tokyo 2020 Olympic Summer Games women's 100m freestyle final at a shopping mall in Hong Kong, China July 30, 2021. REUTERS/Tyrone Siu

A prison van arrives as police stand guard for Tong Ying-kit's arrival, the first person charged under a new national security law, in Hong Kong, China, July 30, 2021. REUTERS/Tyrone Siu

A prison van arrives as police stand guard for Tong Ying-kit's arrival, the first person charged under a new national security law, in Hong Kong, China, July 30, 2021. REUTERS/Tyrone Siu

A prison van carrying Tong Ying-kit, the first person charged under the new national security law, arrives at High Court for a hearing, in Hong Kong, China, July 27, 2021. REUTERS/Tyrone Siu

A prison van which is carrying Tong Ying-kit, the first person charged under the new national security law, arrives at High Court for a hearing, in Hong Kong, China July 27, 2021. REUTERS/Tyrone Siu

A prison van carrying Tong Ying-kit, the first person charged under the new national security law, arrives at High Court for a hearing, in Hong Kong, China July 27, 2021. REUTERS/Tyrone Siu

A prison van which is carrying Tong Ying-kit, the first person charged under the new national security law, arrives at High Court for a hearing, in Hong Kong, China July 27, 2021. REUTERS/Tyrone Siu