Anti-Japanese War: Starting from Steelmaking, I Shocked the World

Li Zhen traveled through time and returned to that humiliating 1938. When others traveled across time, they led troops to fight. What could he, a heavy industry engineer, do? The answer is: steelmaking! When everyone was still using low-quality pig iron, he used local coke to smelt the first bright steel ingot! While the army was still worrying about a few bullets, his arsenal had achieved bullet freedom and even began to study Katyusha! When the enemy laughed at us for not having heavy industry, he silently lit up the science and technology tree. From electricity and chemicals to internal combustion engines and aerospace, deep in the Taihang Mountains, a modern industrial city rose from the ground! Years later, the top Japanese leader drew a circle on the map and said with a trembling voice: "This place code-named 'Iron City' has more terrifying industrial production capacity than our entire country. It is a nightmare that we can never defeat!"