Two: Be kind to Liu Bei's two wives.
Three: Once he knew Liu Bei's whereabouts, he went to take refuge, but the time he spent with Cao Cao was in the first month of the fifth year of Jian 'an (200 years). Cao Cao captured Pi and forced Guan Yu to land. In February, the battle of Guandu broke out, and Cao Cao conquered it and sent general Yan Liang to surround the white horse. In April, Cao Cao personally led the troops north to solve the siege of the White Horse. Guan rode in front of the horse, saw Yan Liang's cover from a distance, stabbed Yan Liang in the crowd and beheaded him. Yuan Shao's generals are "incompetent". After Guan Yu killed Yan Liang, he sealed all the rewards that Cao Cao repeatedly gave him, and also sealed the seal of Han Shou Hou Ting. "In August, Lombardi's army marched into Guandu in dozens of miles, relying on sand piles as chariots.
Guan Yu should leave Cao Cao after April of the fifth year of Jian 'an. Before August, Guan Yu stayed with Cao Cao for no more than half a year.