Liu Bei emerged from humble beginnings in Zhuo County, where poverty marked his youth. He and his mother sustained themselves by weaving mats and selling straw sandals. Early signs hinted at his future prominence; a large mulberry tree near his childhood home was seen as an omen of his rise, and he reportedly voiced youthful ambitions of riding an imperial carriage. His physical appearance was distinctive, featuring long arms extending past his knees and large ears visible from the front.

Studying under the scholar Lu Zhi in his youth, Liu Bei forged a lasting friendship with Gongsun Zan, who treated him as a younger brother. He showed little interest in scholarly texts, favoring instead horseback riding, hunting, music, and cultivating ties with local heroes. Financial backing from horse merchants Zhang Shiping and Su Shuang allowed him to assemble his initial followers, including the pivotal figures Guan Yu and Zhang Fei.

Liu Bei's military career started during the Yellow Turban Rebellion, where he gained distinction in combat. His early governance roles included controversy, such as publicly whipping a government inspector who denied him an audience, an act driven by frustration over potential dismissal. This forced him to flee and resume a transient life, later joining campaigns against other rebels. He employed pragmatic survival tactics, even feigning death to escape capture after a military defeat.

Throughout his campaigns, Liu Bei frequently shifted allegiance, serving various warlords including Gongsun Zan, Tao Qian, Cao Cao, Yuan Shao, and Liu Biao. His leadership emphasized benevolence and approachability; he shared meals and quarters with commoners and soldiers, fostering deep loyalty. This reputation for virtuous conduct led Tao Qian and Liu Biao to cede control of Xu Province and Jing Province to him instead of their own heirs.

A pivotal moment occurred under Cao Cao's service when Cao declared during a meal that only he and Liu Bei were true heroes in the land, causing Liu Bei to drop his chopsticks in shock. This encounter highlighted their burgeoning rivalry. Liu Bei's commitment to restoring the Han dynasty intensified as he opposed Cao Cao's control over the central government.

His strategic acumen was evident in key decisions: recruiting the strategist Zhuge Liang after three visits and forming a critical alliance with Sun Quan's Eastern Wu. This coalition confronted Cao Cao at the Battle of Red Cliffs, thwarting his southern expansion and enabling Liu Bei to consolidate control over Jing Province and later seize Yi Province from his relative Liu Zhang.

Following Guan Yu's death at Wu hands, Liu Bei abandoned his characteristic caution and launched a retaliatory campaign against Wu, disregarding objections from advisors like Zhao Yun and Zhuge Liang. This culminated in the disastrous defeat at Xiaoting (Yiling), where he suffered significant losses.

Ailing in his final days and retreating to Baidicheng, Liu Bei entrusted his successor Liu Shan and the Shu Han kingdom to Zhuge Liang's stewardship. He advised his son to regard Zhuge Liang as a father and pursue goodness relentlessly. He died at age 63, posthumously honored as Emperor Zhaolie.

Liu Bei's character arc reflects persistent resilience amid setbacks and an unwavering pursuit of governance rooted in Confucian ideals of benevolence and righteousness. His relationships, especially his sworn brotherhood with Guan Yu and Zhang Fei, remained central to his identity and motivations throughout his life.