A joke cheated by a pig teammate

Liu Bei's two half-brothers, Guan Yu and Zhang Fei, besieged Cao Bao for no reason and lost Xuzhou. Guan Yu defied his allies and lost Jingzhou. Liu Bei scored by Zhang Fei in the opening game, Guan Yu in the middle game, and played by himself in the last game, thinking that no one was a pig. As a result, he was a big "xianggong" and completely lost the battle and Yiling, which completely laid the foundation for the decline of Shu. It seems that Liu Guan and Zhang are good brothers.