《周书·列传·卷十二》
况且微子离开殷商，在周代被封为王；项伯背弃楚，在汉朝被赐刘姓。
且殷微去商，侯服周代；项伯背楚，赐姓汉朝。
Moreover, Weizhi left the Yin dynasty, and was given the title of king in the Zhou dynasty; Xiang Bo abandoned Chu, and was given the surname Liu in the Han dynasty.