Empress Dowager Bian (30 December 159 – 9 July 230), also known as
Lady Bian, formally known as
Empress Wuxuan, was an
empress dowager of the state of
Cao Wei during the
Three Kingdoms period. She was the wife of
Cao Cao, a warlord who rose to power in the late
Eastern Han Dynasty and laid the foundation of Wei. She bore Cao Cao's successor,
Cao Pi, who ended the Han Dynasty and founded Wei in 220 after his father's death.