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Have a Good Sleep on World Sleep Day
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A health expert was teaching kids sleeping knowledge in a kindergarten in Kaifeng, Henan Province, on March 21, marking the World Sleep Day.

A health expert was teaching students sleeping knowledge in a primary school in Zaozhuang, Shandong Province, on March 21, marking the World Sleep Day.

(Chinanews.cn March 22, 2007)

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