China's Shanghai Composite Index opened down 5.59 points on March 19 (Wednesday), a drop of 0.16%, at 3424.17 points; China's Shenzhen Component Index opened down 11.01 points on March 19 (Wednesday), a drop of 0.1%, at 11003.73 points; China's CSI 300 Index opened down 2.9 points on March 19 (Wednesday), a drop of 0.07%, at 4004.83 points; China's ChiNext Index opened down 7.04 points on March 19 (Wednesday), a drop of 0.32%, at 2221.6 points; China's Science and Technology Innovation 50 Index opened down 4.93 points on March 19 (Wednesday), a drop of 0.45%, at 1084.9 points.