Guo Feng brought the knowledge base of the 21st century to ignite the industrial fire in the Ming Dynasty. He modified bellows, refined steel, burned cement, built machine tools, and turned handicraft workshops into assembly line factories. Zhu Di looked at the continuous output of soldiers, armor and food, and finally believed that this man could change his destiny against the will of heaven. In response to the order from the man on the Dragon Throne in Tianfu to reduce the feudal vassal, Guo Feng presented an object: "Your Majesty, the name of this object is - a flintlock spear."
