The Daning Dynasty has been at war with the northern nomadic tribes for sixty years, and the national treasury is almost exhausted by military expenditures on the border. Lin Mu traveled through time and became the son of a border military household, with no strength, no background, and no money. He found that military logistics in this era was a disaster - food wasted, horses died, and weapons rusted, all because of extremely backward transportation and warehousing management. After he helped the baggage team re-plan the transportation route, the survival rate of the war horses on the entire northern Xinjiang defense line increased by 30%. These achievements were made step by step from the Forage Department to the Ministry of War, from the local area to the center. In a way that no general could have imagined, Lin Mu became the key to victory or defeat on the battlefield - he did not go to fight, he went to "fight the logistics."