Wang Xueer of Beijing-Tianjin-Shanxi-Jiangsu-Shandong-Guangdong-Shaanxi united team (L), Peng Xuwei (C) of Shanghai-Zhejiang-Hubei-Anhui united team and Zheng Yujia of Shandong compete during the women's 4x100m medley relay final at the 2021 Chinese National Swimming Championships in Qingdao, east China's Shandong Province, May 8, 2021. (Xinhua/Xu Chang)
