Chu Ji started by improving the steel used for sabers, and within three months, he equipped fifty of his men with the best ring-shou swords in the world. Cao Cao noticed this unreasonable supply camp - their swords could cut off enemy weapons, and their arrow clusters could penetrate two layers of leather armor.
On the eve of the Battle of Guandu, Chu Ji presented not his troops, but three things: cement formula, blast furnace ironmaking technology, and drawings of the steering mechanism of a four-wheeled carriage.
When Yuan Shao's 100,000-strong army crossed the Yellow River, they no longer faced Cao Cao's weak brigade, but reinforced concrete barriers, an array of crossbows with extraordinary range, and a standardized supply line from Xudu to the front line.
When the logic of war in the cold weapon era was redefined by industrial thinking, the world of the Three Kingdoms began to change.
And Chu Ji's eyes had already crossed Guandu and looked farther away. There is the natural gorge of the Yangtze River, the difficulty of the Shu Road, and a land waiting to be awakened by steel and steam.
