Xu Shu

Xu Shu was one of Liu Bei's advisors during the Three Kingdoms period of China. Cao Cao had long admired the man, however, and wishing to lure Xu Shu into his service he captured his mother and took her to the capital. Xu Shu was known to be a man of strong filial piety and left to find her though he promised never to serve Cao Cao.

Prior to leaving Liu Bei, Xu Shu recommended that he seek out Zhuge Liang, who was to become the Liu Bei's most famous advisor.