The annual average concentration of PM2.5 in Beijing, Tianjin and Hebei dropped by about 60% compared with 2013. Beijing's Miyun Reservoir and Huairou Yanqi Lake were selected as outstanding examples of beautiful rivers and lakes in the country.
The background color of the blue sky is purer and the gold content is more abundant, which has become the most rewarding fact for the general public. The water environment in the three places has completely eliminated sections with inferior Class V quality.