China's Shanghai Composite Index opened up 8.44 points on March 18 (Tuesday), an increase of 0.25%, at 3434.57 points; China's Shenzhen Component Index opened up 41.5 points on March 18 (Tuesday), an increase of 0.38%, at 10999.32 points; China's CSI 300 Index opened up 14.99 points on March 18 (Tuesday), an increase of 0.38%, at 4011.78 points; China's ChiNext Index opened up 10.08 points on March 18 (Tuesday), an increase of 0.45%, at 2225.2 points; China's Science and Technology Innovation 50 Index opened up 4.13 points on March 18 (Tuesday), an increase of 0.38%, at 1087.34 points.