In this March 4, 2016 photo, a participant wearing a face mask arrives for a meeting ahead of the opening session of the National People's Congress (NPC) at the Great Hall of the People in Beijing.  China will not go back to its era of pursuing economic growth at the expense of the environment despite its slowing economy, the country's Environment Minister Chen Jining said Friday, March 11, 2016.(AP Photo/Mark Schiefelbein)
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