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The three most polluted cities in Shandong

Heze City, Jinan City, Zibo City.

Heze City, Jinan City, and Zibo City have always been the hardest hit areas by "smog". This year's haze is much more serious than last year. As the provincial capital, the pollution sources of haze are relatively abundant and difficult to control. Although the light rain continues, the haze weather has not improved.

Pollution refers to the phenomenon that substances harmful to humans or other organisms are mixed into the natural environment, and the quantity or degree reaches or exceeds the environmental carrying capacity, thereby changing the normal state of the environment.