《资治通鉴·汉纪·汉纪十五》
有一位男子，乘坐黄牛犊车来到未央宫北门，自称他是汉武帝的卫太子刘据，公车官将此事奏闻朝廷。
有男子乘黄犊车诣北阙，自谓卫太子；公车以闻。
A man rode a yellow calf cart to the north gate of Weiyang Palace and claimed to be Emperor Wu of the Han's Crown Prince, Liu Ju. The public official reported the matter to the court.