《资治通鉴·汉纪·汉纪二十》
而杨兴正因才能受到黄帝的赏识。贾捐之对杨兴说： 京兆尹出缺已久，如果我能面见圣上推荐他，这个职位马上就可以得到。 
捐之谓兴曰： 京兆尹缺，使我得见，言君兰，京兆尹可立得。 
Yang Xing was appreciated by the emperor for his talents. Jia Jianzhi said to Yang Xing: The chief of Jingzhao County has been vacant for a long time. If I can meet the emperor and recommend him, he will be able to get the position right away. 