Xu Jiayu (R) of China greets Grevers Matt of the United States after the men's 100m backstroke final of FINA Champions Swim Series 2020 in Shenzhen, South China's Guangdong province, Jan 14, 2020. (Photos: Xinhua)

Hungary's Kenderesi Tamas competes during the men's 200m butterfly final of FINA Champions Swim Series 2020 in Shenzhen, South China's Guangdong province, Jan 14, 2020.

Wang Shun of China competes during the men's 200m medley final of FINA Champions Swim Series 2020 in Shenzhen, South China's Guangdong province, Jan 14, 2020.

Sun Yang of China reacts after the men's 200m freestyle final of FINA Champions Swim Series 2020 in Shenzhen, South China's Guangdong province, Jan 14, 2020.

Xu Jiayu of China competes during the men's 100m backstroke final of FINA Champions Swim Series 2020 in Shenzhen, South China's Guangdong province, Jan 14, 2020.