SHANGHAI, Aug. 6, 2012 (Xinhua) -- Photo taken on Aug. 6, 2012 shows dark clouds covering the sky in Shanghai, east China. According to the National Marine Environmental Forecasting Center, typhoon Haikui, the 11th tropical storm of the year, is expected to reach the eastern coastal areas of Zhejiang on Aug. 8. (Xinhua/Niu Yixin)