China is one of the rapidly developing countries. It had been the world's second largest economy entity after the United States. Unfortunately, China, especially the capital city Beijing, had encountered dozens of times haze since 2012. Outbreak of haze weather has been increasingly frequent and serious in Beijing. Sometimes, less half of the national territorial areas of China were on hit. Particular areas included areas of North China, Central China, East China and North-west China. Generally, spring and winter are the susceptible season for haze due to sharply increment of coal consumption. Excessive traffic exhausts plus weakened disposal ability of green plants. Therefore, the longest continuous haze called as ‘haze week’ happened two times in Beijing during late 2013 and early 2014. Nowadays, Beijing is frequently haunted with haze lasting one to seven days. Truly, sharp deterioration of air quality brought by haze heavily to affect overall aspects of urban dweller’s life unprecedentedly. Some people felt physiologically and psychologically overwhelmed especially when coming up unpredictably and repeatedly. More badly, they are helpless except looking forward passively to the soon coming of windy weather.
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