Authorities have vowed to tackle the country’s worsening air pollution During the weeklong National Day holiday that lasted October 1-7,He Yang,a fourth grader from southwest China’s Sichuan Province,traveled to Beijing hoping to see the city at its most beautiful.Unfortunately,the lingering smog left him disappointed."My parents canceled some of our plans,including a trip to the Great Wall,"He complained.According to Beijing’s meteorological authorities,with the exception of
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