This question is really interesting, we can see that in the "Romance of the Three Kingdoms" everyone likes to report their names loudly when they appear, and then report their names as if they have a natural blow to the enemy, just like the subject said that Zhao Yun likes to shout: "Changshan Zhao Zilong is here!" Zhang Fei likes to shout: "Yanren Zhang Yide is here!" So why didn't Guan Yu shout, "Xie Liang Guan Yun is here?" "Now please listen to JAL Jun to break it down for you."

First, why do you want to shout out your own name?
We can see that when everyone shouts, there is a fixed format, that is, origin + surname + word.
If you are born in a place of origin, it is obviously a sense of pride with your hometown, in order to express that I am a person from so-and-so, if I am from a very famous place, that is, my hometown brings honor to me, if I am very famous, it is to add glory to my hometown.
Then there's the last name, why say the last name? In fact, the surname also represents a kind of fame, such as the Runanyuan clan, the Hongnong Yang clan, etc., which is a kind of thing that relies on family power to express itself. In the same way, similar to what we said earlier, sometimes it is the family that brings you glory, and sometimes it is you who brings glory to the family.
Words are generally taken by parents, with parents' good expectations for their children, such as Zhang Feizi Yide, that is, I hope that he will be a person of good character.
Therefore, these names have a certain meaning, so many people like to shout out their names and show a sense of pride.
Second, why does Guan Yu not like to call out his own name?
First of all, we all know that the key to Guan Yu's meeting Liu Bei is that Guan Yu is a fugitive, because he had to escape because he killed someone in his hometown XieLiang, so for Guan Yu, this experience of killing and escaping is not too worth showing off.
In addition, we can find that we have not found any records about Guan Yu's parents, so it is likely that Guan Yu's family has been killed in Xie Liang, and it is precisely because of this that Guan Yu is angry and kills people. Therefore, Xie Liang is not a place worthy of affection for Guan Yu, on the contrary, Xie Liang is a sad place for Guan Yu, so Guan Yu's reluctance to mention his hometown is also forgivable.
Second, I think Guan Yu is a more domineering person. As the saying goes: people don't talk much. It is precisely because Guan Yu is more domineering and more ruthless, so Guan Yu does not like to talk much, as long as he holds a knife.
Third, for Guan Yu, just shout: Guan Mou is here. After hearing this, the young people will naturally be very scared, and then look at the wind and flee. After all, Guan Yu's fame is already very large, and he no longer needs to rely on more talk to show himself.
Text: JAL Tongjian Map: From the Network and The Site, Invasion and Deletion