The Hushen 300 Index reflecting the performance of China's Shanghai and Shenzhen stock exchanges closed at 4,255.46 points on Wednesday, up 2.26 percent, or 94.11 points, from the previous close.

About one fifth of the total stocks listed on the two markets are chosen as samples of the Hushen 300 Index, accounting for 60 percent of the market value in China's stock market.