There is no mention of Guan Yu's occupation in The Romance of Three Kingdoms. Guan Yu fled from his hometown to Zhuo Jun in Youzhou in his early years because of crime, and sold dates on his way to escape.
Guan Yu was a famous soldier in the late Eastern Han Dynasty. When Liu Bei started his army, Guan Yu followed Liu Bei and was loyal and trusted by Liu Bei. Liu Bei, Zhuge Liang and others entered Shu, and Guan Yu guarded Jingzhou. After Liu Bei captured Hanzhong, Guan Yu took advantage of the situation to explore Wei. He besieged Xiangfan, escaped from the Forbidden City, beheaded Pound, threatened China, and the Central Plains shook, but Wu Dong attacked Jingzhou, and Guan Yu was defeated and killed.
Extended information Guan Yu fled his hometown in his early years and came to Zhuo Jun, Youzhou. During this period, I met Liu Bei and became brothers with Liu Bei and Zhang Fei. Feelings are so good that they even sleep together. When Liu Bei served as Prime Minister of Pingyuan, Guan Yu and Zhang Fei were appointed as Sima of other ministries, belonging to different ministries. When attending the event with Liu Bei, Guan Yu and Zhang Fei stood beside Liu Bei to protect him.
In the first year of Xingping (194), Cao Cao was angry at Tao Qian because Cao Song was killed, so he sent troops to attack Xuzhou. Tao Qian asked Liu Bei for help, and Liu Bei and Guan Yu led thousands of people to come to the rescue. Cao Caobing retired, Tao Qianli Liu Bei was the secretariat of Yuzhou, and Guan Yu and Liu Bei stationed troops for Xiao Pei. So, under the repeated compromise of Tao Qian and others, Liu Bei led Xuzhou Pastoral.
In the first year of Jian 'an (196), Liu Bei was attacked by Yuan Shu and Lu Bu and lost to Xuzhou. Guan Yu followed Liu Bei to Cao Cao. Later, when hunting with Cao Tian, Guan Yu advised Liu Bei to kill Cao Cao, but Liu Bei thought that Cao Cao at that time was trying to help the Han Dynasty, and felt it was a pity to kill him, so he refused.
In the third year of Jian 'an (198), Liu Bei and Cao Cao captured Lu Bu alive and captured Xuzhou. Guan Yu and Liu Bei followed Cao Cao's troops back to Xuchang, and Cao Cao appointed Che Zhou as the secretariat of Xuzhou.
Later, Yuan Shu went north to Yuan Shao, and Liu Bei was ordered by Cao Cao to intercept Yuan Shu in Xuzhou. Liu Bei took the opportunity to attack and kill Che Zhou, ordered Guan Yu to keep Pi (now Gupi Town, Suining County, Jiangsu Province) and served as the prefect, while Liu Bei returned to Xiaopei (now Peixian County, Jiangsu Province).
In the twenty-four years of Jian 'an, Guan Yu gradually gained the upper hand in the military friction with Cao Ren, then went hand in hand with land and water, besieged Xiangyang and Fancheng, and used the autumn heavy rain to drown the seventh army, destroying all the troops who came to rescue. Guan Yu shocked China, which made Cao Cao once have the idea of moving the capital to avoid Guan Yu's sharpness.
But later, Sun Quan of Soochow sent Monroe and Lu Xun to attack Guan Yu's rear. Guan Yu lost in the battle with Huang Xu, and finally lost ground and was killed.
After his death, Guan Yu was gradually deified, honored as Guan Gong by the people, and praised and sealed by the imperial courts in previous dynasties. In the Qing dynasty, Guan Yu was regarded as "a loyal SHEN WOO, a great emperor who showed the spirit and courage of helping others" and was known as "warrior sage" and "Wen Sheng"? Confucius is equally famous. The Romance of the Three Kingdoms honored him as the head of the "Five Tiger Generals Army" in Shu, and Mao Zonggang called him the "one of the three musts" in the Romance.
Baidu encyclopedia-Guan Yu