Mechanical engineer Li Mo traveled to Chongzhen for ten years and became a blacksmith apprentice in the southern suburbs of the capital. The government collapsed, bandits broke out everywhere, and Liaodong was at war. He originally wanted to earn a living through his craftsmanship, but found that in this world, even nails had become military supplies. Until that day, when he was boiling water by the blacksmith stove, he stared at the pot lid popping with the heat...
