The Shangai Composite Index went up by 23 points or 0.60 percent on Wednesday to close at 3913 points. The rise was led by China Molybdenum (5.92%), China Merchants Securities (5.21%) and Poly Real Estate (3.72%). On the downside, the weakerst performers were China Coal (-3.25%), Petrochina (-1.52%) and Sanan Optoelectron (-1.36%).