He traveled through time and became a young marshal with residual health that no one expected. The army was full of internal ghosts, surrounded by foreign enemies, and all weapons were purchased from outside.
Lin Yan developed dormantly with modern military industry knowledge. Starting from a dilapidated repair shop, he developed smokeless gunpowder and mass-produced standard firearms, and gradually built a complete military industry system of steel, chemicals, and artillery.
Cleaning up the moths internally, resisting the warlords externally, resisting the blockade of foreign powers, crushing the heroes with military industry, and forging iron and steel rivers in troubled times.
