Xin Pi
The fifth-century historian Pei Songzhi argued that Xin Pi made an inappropriate comparison between Zhang He and the Wei emperors because generals and emperors were of different social status and hence should not be seen in the same light. In Pei Songzhi's opinion, Xin Pi should have instead compared Zhang He with other Wei generals such as Zhang Liao. He also pointed out the comparison did not reflect well on Xin Pi, who was known for being outspoken and upright, because he came close to degrading the status of the Wei emperors by making such a comparison.