Let You Repair Cars for the King and Build Main Battle Tanks

Tian Xin traveled to the poor and backward country of Sali. Tian Xin was repairing a dilapidated car for the king, and accidentally activated the weapon modification system. He directly turned the car into a main battle tank. King's Surprise: You're a fucking genius! I specially appoint you as the chief mechanical engineer, develop new weapons for me, and manage my army at the same time! Tian Xin: What... You want me to be the chief mechanical engineer? ………… Years later, Tian Xin has created various superb weapons and created the strongest army on land. And declared war on Eagle Sauce as a king. Yingjiang: What, your little Sali country dares to declare war on our big Yingjiang country? Tian Xin: Yes, I will destroy your Yingjiang Kingdom! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.