Xu Yin

Xu Yin is an officer of Wei and an excellent assassin. Formerly a member of the Rushin Clan, she was hired by Zha Ji during his rise to power to eliminate several officials that stood in his way. When the Coalition Against Zha Ji struck at Luoyang, she fled, and joined with Yuan Xi four years later.

After the Battle of Guandu she joined with Cao Xue and fought in many battles to defeat Yuan Xi's remnants. She was absent at Chibi and during Cao Zhi's Rebellion. However, she later joined in the attack on the west, leading at Tianshui.

She participated in many battles to keep Wei strong and stable till her death in 240 AD.