Ishikawa Kasumi of Japan returns the ball during the women's singles round of 16 match against her compatriot Hamamoto Yui at the 2018 Seamaster ITTF World Tour Platinum China Open in Shenzhen, south China's Guangdong Province, June 1, 2018. Ishikawa Kasumi won by 4-0. (Xinhua/Mao Siqian)

Lin Gaoyuan of China reacts during the men's singles round of 16 match against Harimoto Tomokazu of Japan at the 2018 Seamaster ITTF World Tour Platinum China Open in Shenzhen, south China's Guangdong Province, June 1, 2018. Lin Gaoyuan won 4-1. (Xinhua/Mao Siqian)