Tickling was a form of torture used in ancient China on nobility because it left no mark and recovery was quick.
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It has been reported that rich people in China can hire "body doubles" to serve their prison time.
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China's capital Beijing means "Gate".
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
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