You're a Small Factory, Self-Developed Star Destroyer, What the Hell?

Lin Feng traveled through the parallel world in 2000 and took over the small dilapidated factory left by his parents. As the chosen director of the factory, he accidentally awakened the "Military Black Technology" system. As long as you successfully sell products, you can unlock the technology tree and develop and manufacture more advanced military products. "Boss, what's wrong with your anti-radiation paint? It absorbed all the signals in my bedroom?" "The material of this fishing rod... Looks like T-1000 carbon fiber material to me?" "No, I want a rope to dry clothes. Why are you taking out an aircraft carrier blocking rope?" Within a month of opening the store, mysterious departments began to visit us, and the paintings around the factory became increasingly outrageous: "And this submersible mecha can withstand water pressure up to 1,200 meters deep?" "You can now build the single-soldier flight system that Yingjiang spent 20 years researching with your own hands?" Even the academicians and professors of Longguo's scientific research department were numb, seeing a miniature nuclear-powered Gundam being built in Lin Feng's factory! More than half a year later, Lin Feng looked at the newly built army mecha base, navy aerospace aircraft carrier base, and air force star destroyer base in the town, and gradually fell into deep thought: "How did you become the most powerful arms dealer in the Dragon Kingdom by taking over a small shabby factory?