The view according to historical records that Huangfu Mi died in the third year of the Taikang regime (282 A.D.), or at the age of 68, hasn't yet met any challenges. But it is important to note that Huangfu Mi wrote a preface to Zuo Si's "Fu (descriptive prose interspersed with verse) of Three Capitals." Had huangfu Mi died in 282 A.D., The "Fu of Three Capitals" should have been written the year before, but Zuo Si's activities (according to historical records) associated with the writing of the "Fu of Three Capitals," such as consulting about the Shu State with Zhang Zai, consulting about the Wu State with Lu J, applying to Jia Mi for a secretary post in return for access to books, should be after the third year of the Taikang regime. Such a contradiction requires a definite answer. For those who believe the "Fu of Three Capitals" was written before the third year of the Taikang regime, the answer is either Zuo Si's activities concerning the "Fu of Three Capitals" precede the writing, or historical data about Zuo Si's activities are not reliable. In contrast, those who believe the "Fu of Three Capitals" was written after the third year of the Taikang regime suspect that Huangfu Mi did not write the preface at all. This paper starts from "A Will" written by Huangfu Mi in his late fifties, arguing that if he died in 282 A.D., then dozens of instances in which he recruited talented people to be officials, according to the History of Jin, should have happened after he was 60, when he was confined to bed. Thus this assumption is unlikely to be correct. Moreover, if Huangfu Mi died in the third year of the Taikang regime, his activities around his 60th year, are difficult to order in time. Ample evidence is martialled here according to the "inferential emendation" method, to conclude that the year of Huangfu Mi's death should be the third year of the yuankang regime (293 A.D.). If this is true, puzzles about the year of Huangfu Mi's death, and Zuo Si's activities concerning the "Fu of Three Capitals," according to historical records, are easy to solve.