Calling service button inside a couchette of the new CRH sleeper train is used for the immediate service. [Photo: Xinhua]
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![Calling service button inside a couchette of the new CRH sleeper train is used for the immediate service. [Photo: Xinhua]](http://images.china.cn/attachement/jpg/site1007/20081222/000d87ad3cdd0ab979dd03.jpg "Calling service button inside a couchette of the new CRH sleeper train is used for the immediate service. [Photo: Xinhua]")
