It's Just a Drill. Why Are You Panicking?

Ye Tian traveled through time and became the lowest technician in the scientific research chain, awakening the most powerful modification system. Is the Harrier fighter a beautiful waste? After modification, version 2.0 Is simply a killer in the world! Sell ​​worn-out tank scrap to China? I can make a lot of money by working out the core secrets with my backhand. Don't you want an aircraft carrier that is in disrepair? Well, since then, the Dragon Kingdom has had powerful offensive and defensive aircraft carriers for ten years! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.