Guan Ping appears in the 14th century historical novel "Romance of the Three Kingdoms" by Luo Guanzhong. He is the second son of Guan Ding (關定), a farmer. His elder brother is Guan Ning (關寧). Guan Yu encounters Guan Ding and his family during his journey across five passes to find Liu Bei. He is so impressed with Guan Ping on first sight that he accepts him as his foster son. During the Battle of Runan, Guan Ping, Guan Yu and Zhou Cang lead 300 men to rescue Liu Bei, who is under attack by Cao Cao's general Zhang He. Guan Ping participates in some of Liu Bei's subsequent military exploits, including the Battle of Bowang against Cao Cao's general Xiahou Dun, and the Yi Province campaign against Liu Zhang. Later, he is relocated to Jing Province to join his foster father in defending Liu Bei's territories in Jing Province. In 219, Guan Ping follows Guan Yu to the Battle of Fancheng and scores some initial victories over Cao Cao's forces, including flooding seven enemy armies. However, in the meantime, Sun Quan (Liu Bei's ally) secretly breaks the alliance and sends his general Lü Meng to attack and conquer Jing Province in a stealth invasion. Guan Yu is completely caught off guard and eventually isolated in Maicheng with a fraction of his remaining forces. While trying to break out of the siege, Guan Yu and Guan Ping are captured in an ambush by Sun Quan's forces. Sun Quan tries to persuade them to surrender, but they refuse so Sun has them executed.