Why is Guan Yu called Master Guan?

Why is Guan Yu called Master Guan? As the name implies, Guan Yu was the second child when he became sworn to Liu Bei and Zhang Fei in Taoyuan, so he was called Master Guan.

Speaking of this ranking, let's talk about their ranking. According to reliable historical records, Guan Yu is one year older than Liu Bei, but why did he rank second?

Therefore, everyone is speculating that some things of Luo Guanzhong in The Romance of the Three Kingdoms are just fiction and untenable. Anyway, Guan Yu's name was called.

Moreover, there is no specific date of birth in Zhang Fei's historical records, that is, the date of birth is unknown and it is impossible to speculate. I don't know which of them is older.

Anyway, in everyone's mind, Liu Bei is the boss, Guan Yu is the second child, and Zhang Fei is the third child with five big and three thick.

But to be honest, in Liu Bei's mind, Zhang Fei can't compare with Guan Yu. In Liu Bei's mind, Guan Yu's ability is much stronger than Zhang Fei's. In Liu Bei's mind, Guan Yu's ability is second only to his own.

I think another reason is that although Guan Yu and Zhang Fei are both loyal and can do anything for their brothers, sometimes Zhang Fei is really inferior to Guan Yu.

For example, once Zhang Fei promised Liu Bei to do one thing well, but Zhang Fei turned his head and forgot that he was still eating meat and drinking. He can only say that Zhang Fei is loyal, but in this respect, he is really inferior to Guan Yu.

Guan Yu always puts righteousness first. Be loyal to friends.