Ai Kesen (R) of Chinese men's national football team attends a training session in Shanghai, March. 22, 2021. Chinese men's national football team is preparing for the upcoming 2022 World Cup qualifiers match. (Xinhua/Ding Ting)

Players of Chinese men's national football team attend a training session in Shanghai, March. 22, 2021. Chinese men's national football team is preparing for the upcoming 2022 World Cup qualifiers match. (Xinhua/Ding Ting)

Ai Kesen (R) of Chinese men's national football team attends a training session in Shanghai, March. 22, 2021. Chinese men's national football team is preparing for the upcoming 2022 World Cup qualifiers match. (Xinhua/Ding Ting)

Players of Chinese men's national football team attend a training session in Shanghai, March. 22, 2021. Chinese men's national football team is preparing for the upcoming 2022 World Cup qualifiers match. (Xinhua/Ding Ting)

Players of Chinese men's national football team attend a training session in Shanghai, March. 22, 2021. Chinese men's national football team is preparing for the upcoming 2022 World Cup qualifiers match. (Xinhua/Ding Ting)