Three Kingdoms: I Serve as Ji Han's Military Advisor

A college student accidentally traveled to the late Han Dynasty and the Three Kingdoms period after falling off a cliff during an outdoor adventure. Time travel, rebirth, farming, machinations, no female protagonist. The protagonist accidentally falls off a cliff, travels back to the Three Kingdoms at the end of Han Dynasty, fights wits and courage with various forces, and finally assists Ji Han to revive the Han Dynasty. .