Ma Long (front) and Xu Xin of China compete during the men's doubles semifinal against Ovidiu Ionescu of Romania and Alvaro Robles of Spain at the 2018 Seamaster ITTF World Tour Platinum China Open in Shenzhen, South China's Guangdong Province, June 1, 2018. Ma Long (R) and Xu Xin lost 2-3. (Xinhua/Mao Siqian)