Military Industry: Can Warships Be Built? Able! It Can Fly

[Sweet article + evil belly + multiple female protagonists + military equipment + revenge] Leng Yuan, a top cattle and horse laborer from China, was reborn as a child in a parallel world. When he finally grew up and was ready to show off his talents, he found that his father and mother were gone. Then he unexpectedly awakened the most powerful mechanic system! Developing a main battle tank? I'm already working on the fourth generation. Are you still working on the third generation? Fighter? Excuse me! The eighth-generation fighter jet has been flying around your country for several times and is back! What? Do you want to repair a tank? Come on, come on! First, dismantle these two Type 99 main battle tanks a hundred times! What? How many times have I dismantled it? I dismantled the tank more than 400 times before the master let me repair the tank! I dismantled the Leopard III main battle tank five hundred times, and then I took out one and handed it over to the country. Is it reasonable? What? The largest launch vehicle is only 500 tons? Get out of the way and let me come! Is it enough if I redesign and modify the hand-made parts to increase to 5,000 tons? If it's not enough, I might dismantle some more starships and maybe I'll get some inspiration! Very soon!