Qian Zhongshu himself said that there may be many characters.

Jiang Yang wrote in Qian Zhongshu's photo, "Fang Hung-chien was built on two relatives: one was ambitious and often full of complaints; An arrogant singer. Both of them have read Fortress Besieged, but neither of them thought of Fang Hung-chien, because neither of them had experienced Fang Hung-chien. Zhong Shu takes Fang Hung-chien as the center of the story, and often sees things from his eyes and feels from his heart. Casual readers will sympathize with him from understanding, care about him from sympathy, and even integrate themselves with him. Many readers think that he is the author himself.

Among them, the character prototype

The prototype of Cao should be.