Fighting in Another World Is Too Bad. I Teach Them How to Play Sun Tzu's Art of War.

Li Yan, a history graduate, accidentally traveled through time while reading a book and fell into a war-torn alien world. Here, princes are divided and wars occur frequently, but the so-called "art of war" is nothing more than brute force charge. The generals don't even know the most basic formation arrangement. Victory depends on the number of people, and the people are trapped in the misery of being displaced. Li Yan, who only had a pocket edition of "Sun Tzu's Art of War" with him, encountered a village being plundered by enemy troops as soon as he gained a foothold. Facing an "elite force" that was a hundred times his own, he quickly used elementary school mathematics to figure out the enemy's marching blind spots, used the terrain to lay simple traps, and actually forced a hundred-man troop back with the help of a dozen villagers. This scene happened to be witnessed by a passing general, who doubtfully invited him into the camp. Since then, the alien battlefield has become Li Yan's "teaching site." He used "surrounding Wei and rescuing Zhao" to relieve the siege of the city, which confused the enemy generals who could only attack hard; he used "attacking in the east and attacking in the west" to cleverly seize food and grass, trampling on the old rule of "military strength first" under his feet. When the enemy invaded with all its strength, he not only adopted the strategy of "know yourself and the enemy and fight a hundred battles with no danger of defeat", but also used the knowledge of proportions to optimize arrow arrays and build fortifications based on geometric principles, turning the seemingly disparate battle situation into a textbook-level counterattack model. From being ridiculed for "talking about war on paper" to becoming the "strategist" that countries compete for, Li Yan used the wisdom of the earth to tear open the barriers to war in other worlds. In this "Knowledge Dimensionality Reduction Strike", there is not only the thrill of "defeating the strong with the weak", but also the deeper meaning of "strategizing to determine the world". Let's see how modern scholars can rewrite the pattern of another world with an ancient book.