Meanwhile, the insurance sector clawed back into positive territory following Tuesday's losses. New China Life Insurance Co rose 3.19 percent to 28.48 yuan.
Among individual stocks, People.cn Co, a news portal owned by the official People's Daily, announced Tuesday night that it expects to see a 50-percent increase in its 2012 earnings over the previous year. The stock rose 0.90 percent to 39.43 yuan.
China uses PM 2.5 in weather alert system