My Black Tech System Is an 18th-Level Civilization Artifact

When F-20 fighter jet chief engineer Zhang Chen transmigrates into a child's body on Blue Star, he brings with him a game-changing secret: a system from an 18th-level civilization. While Dragon Country struggles under Western sanctions and technological oppression, young Zhang Chen casually submits a fully functional J-10 fighter jet model for his first-grade craft class—complete with advanced aerodynamics, stealth materials, and weapon systems. His classmates brought paper airplanes. He brought a revolution. When this 'toy' lands in the hands of the nation's top aerospace engineer, everything…