Mount Dingjun
Guan Lu appears as a character in the 14th-century historical novel "Romance of the Three Kingdoms", which romanticises the events in the late Eastern Han dynasty and Three Kingdoms period. In Chapter 69, around the year 217, Cao Cao summons Guan Lu and orders him to use his divination skills to predict the future. Guan Lu predicts that Xiahou Yuan will be killed in action at the Battle of Mount Dingjun, Lu Su will die of illness, a fire will break out in Xuchang, etc. All his predictions came true. Historically, however, Guan Lu was only around eight years old in 217.