Shock! Build a Mecha at the Beginning and Return Home

Yang Yun, who lives in the United States, is unmatched in scientific research and invention. He wants to return to his country to serve, but is blocked by the United States. Aircraft and giant ships will never be open to Yang Yun! In anger, Yang Yun built a mecha with built-in stealth, anti-radar and flying skills, and flew back to his motherland wearing the mecha! Immediately! Global tremor! After that, Yang Yun created an evolved version of nuclear fusion! Build a maglev tram that is faster than an airplane! Build a spaceship that can fly out of the solar system! Build a square-inch elevator that can go from the earth to the moon! He creates all kinds of invincible technologies and inventions! Transform the world! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.