Why is the fine dust in Beijing so bad?

Travel

I'm studying abroad and it wasn't this bad until last month, but it suddenly got really bad. Is it usually this bad in spring?


  304 2   7 years ago

pu1. When I saw it over 350, I thought the air in Korea is so fresh


2018-03-24

pu2. I think it's really bad because there's a lot of yellow dust in spring


2018-03-24


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