The Shangai Composite Index gained 27 points or 0.67 percent on Monday to close at 3967 points. Gains were led by Avic Shenyang Aircraft (5.97%), Shaanxi Coal (3.87%) and Kweichow Moutai (2.99%). Biggest losers were Sanan Optoelectron (-3.82%), China Life Insurance (-2.49%) and China Pacific Insu (-1.84%).