Smog alert upgraded
By Hou Liqiang and Zheng Xin | China Daily | Updated: 2014-02-22 07:24
Schools cancel outdoor activities; people urged to take public transportation
Beijing raised its four-tier air pollution alert system to the second-highest level for the first time on Friday, with dense smog forecast to persist over the next three days.
Under the "orange" alert, schools and kindergartens are advised to cancel activities outdoors.
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