Fa Zheng (176-220) was an officer of Shu and former servant of Liu Zhang. Together with Zhang Song and Meng Da, he planned Liu Bei's Shu campaign. He was appointed Prefect of Shu District upon Liu Bei's entry into Chengdu and with Zhuge Liang worked on govcerning. Well-versed in strategy, he was the main adviser for the attack on Hanzhong. He lured out Xiahou Yuan at Mt. Dingjun which allowed Huang Zhong to kill him.