It also states that Du Mu praised Jang as a man of humanity and justice comparing Jang and Jeongyeon's relationship with that of Bunyang GWAK and Imhoe YI at the An Lushan War and as a comment of Song Qi who edited the story collection of "Shintojo", he listed the names of people, who thought about the nation first with the mind of righteousness during a difficult time for the country, as Qi Xi of the Jin (Spring and Autumn) Period and Bunyang GWAK and Bogo JANG of the Tang Period, saying 'How can we say that there were no excellent people in the foreign countries of East' (Original: 嗟乎、不以怨毒相槊、而先國家之憂、晉有祁奚、唐有汾陽・保皋、孰謂夷無人哉).
さらに続けて、杜牧が張保皐・鄭年の交わりを安禄山の乱における郭汾陽・李臨淮の交わりに見立てて仁義の人であると賞賛したことを伝え、『新唐書』の列伝を編纂した宋祁の評として、国難の時期に義の心を持って国家の憂患を第一に考えた人として晋(春秋)代の祁奚、唐代の郭汾陽・張保皐を挙げ、「どうして東方の蛮国に優れた人物がいないということがあろうか」と称えている（原文：嗟乎、不以怨毒相槊、而先國家之憂、晉有祁奚、唐有汾陽・保皋、孰謂夷無人哉。）。