The Hui people live in more central China, close to the north.

回族人生活在华中地区，靠近北方。

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Ying-Hui Fu: When these people have this mutation, their sleep amount is less.

傅颖慧：当这些人有这种基因变化时，他们的睡眠量较少。

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Ying-Hui Fu: When these people have this mutation, their sleep amount is less.

傅颖慧：当这些人有这种基因变化时，他们的睡眠量较少。

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