The Beginning of the Alien War: a Human-Fighting Machine

My lord, times have changed, and fast. Dayuan Kingdom: Our cavalry is feared. Wu Eryi: I have tanks and armored vehicles. Great Song Dynasty: Our infantry formation is invincible. Wu Eryi: I have tanks and armored vehicles. Da Qin: Everyone in the world has changed their minds after hearing about our crossbows. Wu Eryi: I have tanks and armored vehicles. Daming: What else do you have besides these? You are still nothing! Wu Eryi: I also have armed helicopters, fighter jets, bombers, missile vehicles, aircraft carriers... All countries: ... This guy is taking the bamboo shoots! If young people don't follow martial ethics, we advise you to follow the rules of the rat tail. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.