郭嘉是汉末至三国时期的重要历史人物。他跟随曹操１１年，转战南北，出谋划策，多次取得胜利，在曹操统一北方的活动中起到了不可替代的作用。 郭嘉少年时就有远大志向，为施展自己的才华，郭嘉首先投奔袁绍。袁绍在当时北方军阀中势力最大，他占有广阔的地域，兵多将广，再加 Guo Jia is an important historical figure from the end of Han Dynasty to the Three Kingdoms period. He followed Cao Cao 11 years, fought North and South, give advice and counsel, won many times, play an irreplaceable role in Cao Cao’s unification of the North. Guo Jia juvenile ambitious, in order to display their talent, Guo Jia first defected Yuan Shao. Yuan Shao was the largest force in the northern warlords at the time. He occupied a vast territory,