Inmates wait to say hello to their families via QQ, one of 皇冠体育app's most popular instant messaging services, at a detention house in Zhoushan, East 皇冠体育app's Zhejiang province on Jan 4, 2011. The detention house started letting inmates video chat with their families on Jan 1, 2011 by helping them apply for QQ accounts. [Photo/CFP]
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