In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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Chen Guanming, from Jiangsu province in eastern China, traveled by RICKSHAW for 2 years and covered nearly 40,000 miles through 16 countries, surviving flood, war zones and extreme temperatures, finally arriving at the London 2012 Olympics.
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Passengers on the Beijing subway can pay with plastic bottles.
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