You Were Caught Working Part-Time During the Summer Vacation. Did You Sell the Fishing Rod to the Air Force?

[No system + brainless fun + ruthless live broadcast + invincible omnipotence + patriotism] When he woke up, Yang Dong traveled through time and became a college student, and took over his family's materials factory. After returning from the summer vacation, he was about to go to class, but unexpectedly a group of heavily armed policemen rushed into the school. "Is this fishing rod of yours for the Air Force guys?" Yang Dong: "Of course, this fishing rod is tailor-made for Air Force guys!" Unexpectedly, the body material that was stuck in the United States was overcome by a fishing rod! A few days later, when the Air Force wearing sky blue appeared in their own factory. Yang Dong was confused! "You, you are actually the real air force? By the way... How did my fishing rod become a strategic material?" From then on, Yang Dong embarked on a road from industry to military... My drone was transformed into a bomber and sent to the battlefield in the Middle East! I sold paint to be used as a stealth coating for fighter jets, but the military requisitioned it and hid it in the snow! We have steel pipes and democratically modified the cheapest intercontinental missiles to accurately strike the island country's toilet! … Only you can't imagine that Yang Dong couldn't do it without me. You want to say that what I sell is strategic materials? No, I started by selling fishing rods!