Xu Beiou's Conquest of the Three Kingdoms

In the first year of Chuping, Dong Zhuo burned Luoyang, and the feudal lords east of Hangu Pass clashed, signaling the grand start of the chaotic late Han era. Xu Beiou, a modern history graduate student, wakes up as a destitute youth from a broken family in Qinghe County, Jizhou, with corpses and blood before his eyes, survival being the only test. He has no cheat system, no divine martial arts, only a belly full of late Han history knowledge, basic science and engineering common sense, and a modern mindset ingrained in his bones. From building a village fort to resist bandits, to improving farm tools and gathering refugees; from living under others' roofs in Jizhou, to seizing opportunities to establish his own territory. He has seen Yuan Shao's stubbornness, Cao Cao's true colors as a warlord, Liu Bei's forbearance and resilience, and understands the arrogance of the gentry, the struggles of the commoners, and the displacement of the people. As the flames of warlords vying for supremacy spread across the land, Xu Beiou stands with a sword in the Central Plains, determined to carve a path for the commoners in this era dominated by aristocratic families. History veers off course because of him, and in the winds of Jian'an, a legend of a northern traveler is added. — Description from novelcodex.org