Students from Guangminglu Primary School in Shijiazhuang city of Hebei province practice some martial arts movements believed to be able to strengthen the body's resistance against smog, on Dec 11, 2013. School officials said certain movements could help lungs discharge harmful substances. North China's Hebei province has been severely paralyzed by smog.[Photo/icpress.com.cn]|
SHIJIAZHUANG - A smog ...
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