In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
Passengers on the Beijing subway can pay with plastic bottles.
29
In the U.S. the typical school year is 180 days long. In China, the typical school year is 251 days.
7
In 2002, there were no billionaires in China. In 2007, there were 106 billionaires.
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