Guan Yu was an important general of Shu Han during the Three Kingdoms period, known as "Guan Yunchang". In the Romance of the Three Kingdoms, Guan Yu was known for his bravery and good fighting skills. He was hailed as the "Tiger's Might" and had led the army to defeat the enemy many times to protect the safety of Liu Bei and his family. According to historical records, Guan Yu was indeed an outstanding general. His bravery and loyalty in the war were praised by future generations. Before Liu Bei recruited him, he had served during the Yellow Turban Uprising and gained the reputation of " Unyielding Justice ". After joining Liu Bei's team, he had followed Liu Bei all the way through many dangers and difficulties, always maintaining loyalty and courage. Guan Yu was outstanding in both military and political aspects. His political ability was praised as outstanding, and he was able to work with Liu Bei and other executives to formulate strategies and make decisions. In the military, the army he led had defeated the enemy many times, especially in the Battle of Red Cliff. He showed outstanding command ability and courage. Therefore, in history, Guan Yu was a very outstanding general. His bravery, loyalty, and leadership were widely recognized. In the Romance of the Three Kingdoms, he was also shaped into a heroic, upright, and magnanimous image that was deeply loved by readers.