Ding Ning (L) and Zhu Yuling of China serve during the women's doubles final against Jeon Jihee and Yang Haeun of South Korea at the 2018 ITTF World tour China Open in Shenzhen, south China's Guangdong Province, on June 3, 2018. Ding and Zhu won 3-1. (Xinhua/Wang Dongzhen)