Zhang Ren was from Shu Commandery (蜀郡),
Yi Province, which is around present-day
Chengdu,
Sichuan. He had a humble family background, and was known for his courage and loyalty since he was young. He was recruited to serve as an Assistant Officer (從事) in the provincial office under
Liu Zhang, the Governor of Yi Province. In 212, the warlord
Liu Bei launched
a campaign to seize control of Yi Province from Liu Zhang. Liu Zhang ordered his officers Liu Gui (劉璝), Leng Bao (冷苞), Zhang Ren, Deng Xian (鄧賢) and others to lead troops to Fu (涪; in present-day
Mianyang, Sichuan) to resist Liu Bei, but they were defeated and forced to retreat to Mianzhu (緜竹). Zhang Ren and Liu Zhang's son,
Liu Xun, moved to a garrison at Luo (雒; north of present-day
Guanghan, Sichuan). When Liu Bei's forces showed up, Zhang Ren led his men to engage the enemy at Yan Bridge (鴈橋) but was defeated and captured alive. Liu Bei had heard of Zhang Ren's reputation for being brave and loyal so he asked Zhang to surrender. However, Zhang Ren replied sternly, "I'll never serve two lords." He was then executed. Liu Bei felt it was a pity. ==Zhang Ren Tomb==