On August 27th, although the high temperature in Hangzhou has disappeared, the dust-haze occured again. The sky above the West Lake was shrouded by the continous dust-haze. Recenly, Ministry of Environment Protection published the data of the air quality for 74 cities in July among which the percentage of the standard-passing days of Lishui and Quzhou was 100% while that of Jiaxing and Hangzhou and other two cities was less than 50%.