Lin Yuan traveled through time.
Dressed as a humble craftsman, three generations of ancestors have been blacksmiths.
The original owner starved to death on the deserter road, and here he comes.
In his previous life, he was a military mechanical engineer in a state-secret unit.
——Professional counterpart.
When a martial arts master shows off his inner strength, he uses ballistic calculations to lock the opponent's position.
When the nobles laughed at "the untouchables are worthy of forging iron", his reverberatory furnace had already produced hundreds of steel.
When the barbarian cavalry broke through the border, he went up to the city wall with three thousand steel knives.
Everyone thought he was a useless craftsman.
Until one day, the strongest imperial city of the Great Yan Dynasty was smashed open by him with a hydraulic city breaker——
Only then did they discover that this "waste" talent was used to give the world a "dimensionality reduction blow."
Oh, by the way, he also took in a kid named Gear.
That kid later became the best swordsman in the world.
