《汉书·传·王莽传上》
左将军光禄勋甄丰侍宿护卫三朝天子，忠义诚信，仁爱笃厚，派他迎接中山王，辅助劝导奉养，从而安定了国家，赐封甄丰为广阳侯，食邑五千户，任命甄丰为少傅。
左将军光禄勋丰宿卫三世，忠信仁笃，使迎中山王，辅导共养，以安宗庙，封丰为广阳侯，食邑五千户，以丰为少傅。
Lieutenant general and commander of the Guanglu Palace, Zhen Feng, has served three emperors and is loyal, honest, benevolent, and kind. He was sent to welcome the king of Zhongshan, assisted in persuading and supporting him, and thus stabilized the country. Zhen Feng was granted the title of Marquis of Guangyang, with a fief of 5,000 households, and was appointed junior tutor.