The pictures Chinese President Xi Jinping puts up on his bookshelf during his traditional New Year's speech provide rich food for thought for China watchers. This year, the most prominent new pictures were that of President Xi with his two predecessors Hu Jintao and Jiang Zemin - perhaps to assuage rumours that the unceremonious removal of Mr Hu at the closing session of the 20th Party Congress in October signalled a split in the party. Also featured was Mr Xi Zhongxun, Mr Xi