Anti-Japanese War: the Military-Industrial Empire That Started with the Sword

When engineer Liu Xuan woke up, he found that he had become a defeated soldier in 1940. There is no system to deliver weapons, and there are no golden fingers. He only has a pair of hands, an engineer's brain, and an auxiliary system that can only optimize processes and cannot create things out of thin air. The independent regiment was short of guns and ammunition, so he repaired the abandoned looms and let the soldiers wear cotton clothes. When the enemy was sweeping away, he built directional mines to make it impossible for the invading enemies to return. The base area was blocked, so he used local methods to make steel, homemade gunpowder, and built an underground arsenal from the ruins. When the regiment leader carried the grenade he made and captured the county town, when the soldiers tried firing the mortar he made, they cheered loudly, and when the enemy intelligence department listed him as a key target and offered a bounty for pursuit! Everyone wants to know: What else can this "Liu Gong" hiding in the Taihang Mountains create? From a landmine to an industrial base. From a repair shop to the important rear supporting the front line. He is not a general and does not direct operations. But every bullet he made added strength to victory. When the fire of industry lights up the darkest era—— What can one person bring to this war?