During the Jiading period of the Southern Song Dynasty, Shen Zhichou, the daughter of Shen Kuo, a doctor of arithmetic in Lin'an, was worried about her family and country. She disguised herself as a man and took the pseudonym "Shen Chou" and sneaked into the war-torn Huaixi military camp and became a small accountant. She cherishes Li Ye's "Measuring the Circle of the Sea Mirror" and hopes to use "Tian Yuan Technique" to solve the war dilemma. The grain road was frequently "encircled and rescued" by the Jin army, and the losses were staggering. Shen Zhichou used calculations as a blade to deduce the "differentiation" of grain and grass circulation, and even used the wisdom of "a chicken and a rabbit in the same cage" to break the Jin army's logistics trap. The system of "food distribution according to work" she created ignited the enthusiasm of the soldiers. However, the battlefield is fleeting, and calculations and deductions must comply with the ancient principle of "seeking a single skill in the Great Evolution". If the error exceeds five points, it will become false. With startling steps, she moved the vitality of military resources with her delicate hands, and finally urged the Song Army to set up the position of "Military Resource Planning Prime Minister", replaced old rules with mathematics, and wrote the pioneer of scientific military management on the iron-blooded battlefield. This is not a case of one person changing his fate against the will of heaven, but a legend of a system that started a prairie fire.
