Three Kingdoms: Taking over the World from Scratch

Time travel + no system The modern social animal travels back to the late Han Dynasty, starting from the ancient experience from scratch, to see how a small person rewrote the magnificent history of the late Han Dynasty. The protagonist is civilized, selfish, hypocritical, and pursues practicality; he has impetuous ideas but pursues safe behavior; he is a pessimistic optimist Have nothing - stand firm - develop steadily - take advantage of the situation to rise - fight fiercely against the heroes There is no system, nor does it carry any modern things. All it can rely on are the modern concepts and historical knowledge that I have cultivated by standing on the shoulders of my ancestors.