You can refer to the brave part of Zhang Guan in Volume 7 of Zhao Yi's Notes on the Twenty-two Histories, and sort out in detail the information that the ancients used Guan Yu or Zhang Guan as a synonym for brave generals:

1, Monroe: "I am long and studious, and I can read Zuo Zhuan easily. I have an aboveboard heroic terrier, but I am quite conceited and arrogant. " "Although there is a family today, and Guan Yu is a bear or a tiger, is it safe?" ;

2. Zhuge Liang Shu and Guan Yu: "Meng Qi is a hero with both civil and military skills. He is the best player in the world and a disciple of Fu and Peng. When he was competing with Yide, he was not as good as the peerless group. " ;

3. Zhou Yu called Guan Yu and Zhang Fei: "General Xiong Hu." ;

4. Fu Gan called Guan Yu and Zhang Fei: "Bravery is the enemy of all, and it must be done." ;

5. Biography of Jin Shu Xia Liu: "Every time Liu Jinxia hits a thief, he is trapped in the front, and Hebei is better than Guan Yu and Zhang Fei." ;

6, Shu Wei Cui Yanbo biography: "Cui Gong, ancient Zhang Guan also."