Wei Yan's reasoning for his Ziwu Valley Plan was recorded in the historical text Weilüe, which was then added as annotations to his biography in the Sanguozhi.
When the Cao Wei court received intelligence about Wei Yan's Ziwu Valley Plan, the emperor Cao Rui immediately removed Xiahou Mao from his military command in Chang'an and reassigned him to be a Master of Writing (尚書) in Luoyang [REF].