The Shangai Composite Index went up by 18 points or 0.45 percent on Wednesday to close at 4113 points. The rise was led by Datang Intl (10.03%), Yonghui Superstore (9.86%) and New China Life (9.47%). On the downside, the weakerst performers were Sanan Optoelectron (-7.02%), Avic Aviation Engine (-1.62%) and Bank Of China (-1.40%).