As the second in command of the Shu state, Guan Yu was not only good at leading soldiers to fight, but also proficient in the art of war, and also had a deep understanding of the layout of the army. Moreover, Guan Yu is the embodiment of loyalty, and his friendship with his brothers naturally has nothing to say. But Guan Yu has one of the biggest shortcomings, that is, blind arrogance and contempt for people who are weaker than him. But compared to the people who were stronger than him, he still had a lot of respect, and Lü Bu was one of them. However, after Lü Bu's death, Guan Yu met everyone who was called a puppet, but the following four exceptions.
Liu Bei

The first is Liu Bei. Liu Bei was Guan Yu's brother-in-law, Guan Yu's eldest brother, and his first respected figure. Guan Yu greatly admired Liu Bei's benevolence and corporal Li Xian, plus Guan Yu was hunted down and killed by the government at that time, and it was Liu Bei who took him in during his escape, so in front of Liu Bei, he was still very humble.
Zhang Fei
The second is Zhang Fei. Zhang Fei is his third brother, with a brave temperament and infinite strength, and is known as an enemy with Guan Yu. Guan Yu also had great respect for his younger brother, and did not show any arrogance in front of him. Moreover, in order to follow Liu Bei, Zhang Fei could ignore his former family property, and Guan Yu admired him for his temperament.
Zhang Liao
The third was his opponent Zhang Liao. He and Zhang Liao were very good friends, and when Guan Yu was forced into Cao's camp, it was Zhang Liao who took care of him all the time. Moreover, Guan Yu showed that he was "in Cao Ying's heart in Han", Zhang Liao did not say much, still supported him, and even sacrificed his own life in order to save Guan Yu, such a friend of love and righteousness, Guan Yu naturally respected.
Bond
The last one is Pound. Pound is also his opponent and has no friendship with Guan Yu. At that time, Pound shot Guan Yu's helmet with an arrow, almost killing Guan Yu. Later, Guan Yu pulled back a round, and Pound was captured. Guan Yu persuaded him to surrender, but he swore to die, and although he eventually died at the hands of Guan Yu, Guan Yu admired his loyalty to the lord and respected him as a person.