Smog in China

It is a big piece of news that many cities in China, including my hometown Wuhan, are suffering from hazardous smog, What surprised me most was that some of my friend went back to China then they had rhinitis because of smog. After they arrived at Finland, their noses recovered. I knew that the environment here is clean but now I am impressed actually.

ironically, I have heard that some guys wanted to visit China to watch the smog because they had never seen it. I hope Chinese government would implement related policy to solve the smog issue as soon as possible.