China's Shanghai Composite Index opened down 3.32 points on May 23 (Friday), a drop of 0.1%, at 3376.87 points;
China's Shenzhen Component Index opened down 9.01 points on May 23 (Friday), a drop of 0.09%, at 10210.62 points;
China's CSI 300 Index opened down 3.49 points on May 23 (Friday), a drop of 0.09%, at 3910.37 points;
China's ChiNext Index opened down 2.36 points on May 23 (Friday), a drop of 0.12%, at 2043.2 points;
China's Science and Technology Innovation 50 Index opened down 1.0 point on May 23 (Friday), a drop of 0.1%, at 989.71 points.