Took the Wrong Path While Restoring the Han Dynasty [Three Kingdoms]

In the first year of the Jian'an era, a modern college student transmigrates into the body of Jia Xu, an eighteen-year-old strategist serving under the warlord Zhang Xiu in Nanyang Commandery. Although the historical Jia Xu was a renowned but ruthless advisor known as the "Poisonous Strategist," the protagonist retains only fragmented memories of the original host and relies on his modern knowledge to navigate the chaotic Three Kingdoms period. He finds himself in a relatively stable region under Zhang Xiu's command, where he has implemented modern military training methods and agricultural reforms that have improved the lives of the local people. However, his peace is threatened by the looming shadow of Cao Cao, whose southern campaign is inevitable. Jia Xu knows from history that Cao Cao will soon attack Zhang Xiu, leading to a devastating conflict that historically resulted in Zhang Xiu's surrender and Jia Xu's defection to Cao Cao's side. Determined to survive and protect his troops, Jia Xu realizes he cannot face Cao Cao's formidable strategist team alone and decides he must recruit the legendary Zhuge Liang to serve as his battlefield commander. Jia Xu spends months searching for Zhuge Liang, who is living in seclusion in Nanyang with his uncle, Zhuge Xuan. Due to a misunderstanding regarding the young age of the prodigy, Jia Xu initially fails to locate him. When Zhuge Xuan falls critically ill and sends a letter entrusting his nephews to Jia Xu, the strategist rushes to the Zhuge residence, only to mistakenly interact with Zhuge Liang's younger brother, Zhuge Jun, believing him to be the famous strategist. The error is corrected when the real Zhuge Liang appears, and Jia Xu, seizing the opportunity, persuades the entire Zhuge family, along with their neighbor Huang Chengyan and his daughter Huang Yueying, to join his cause. He offers them medical care from famous physicians Hua Tuo and Zhang Zhongjing, whom he plans to attract using improved papermaking technology that Huang Yueying helps him develop. As Jia Xu consolidates his new team, Zhang Xiu returns from a grain delivery mission to Liu Bei, having captured the legendary Cao Cao general Dian Wei in a trap. Dian Wei, known for his immense strength and loyalty to Cao Cao, is brought before Jia Xu and the newly arrived strategists. The capture of such a renowned warrior boosts the morale of Zhang Xiu's forces, but it also accelerates the timeline for Cao Cao's retaliation. Meanwhile, in Cao Cao's camp, the strategist Guo Jia analyzes the situation and predicts that Dian Wei has likely been captured by Jia Xu, recognizing the danger posed by the young advisor's growing influence. Cao Cao, driven by a desire to recruit talented individuals and eliminate potential threats, prepares for an immediate campaign against Zhang Xiu. Jia Xu, now equipped with a team of brilliant strategists and a captured elite general, must prepare Nanyang Commandery for the impending war, hoping to alter the historical outcome that once led to his side's defeat.