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A comment on China Bans the Word 'Leica' on Social Media. Parent comment

Re:China Bans the Word 'Leica' on Social Media by YjSe2GMQ on Monday April 22, 2019 @01:19PM (#19720699)
It depends heavily on the weather, and on the season. No wind -> worse smog, more coal heating (in the winter) -> also worse smog. It does seem to be improving though:

http://img.caixin.com/2018-11-16/1542361119634258.jpg

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