Lin Chen traveled back in time to the Anti-Japanese War. With his excellent military technology, he started from a small arms workshop, improved equipment, trained craftsmen, and established production lines.
With repeated combat tests and technological breakthroughs, he made the weapons in his hands stronger and stronger, making the soldiers around him more confident as they fought.
Faced with the crazy raids by the Japanese invaders, Lin Chen and his comrades used wisdom and courage to protect their homeland and fight against the invaders.
An inch of mountains and rivers, an inch of blood, a hundred thousand young people and a hundred thousand troops. This is a story about military workers serving their country.