[Technical flow infrastructure + military crushing + struggle for hegemony in troubled times + happy ending]
Dressed as an exiled good-for-nothing bastard, there is only one old servant left at the beginning, in a desperate place where barbarians and bandits are rampant.
While others were waiting to die, military industry boss Lin Yan smiled.
Making purified water, making soap, modifying agricultural tools... This is just a small test.
When the bandits attacked, he took out his homemade repeating crossbow and gunpowder can.
When the county guard suppressed him, he presented the irrefutable evidence of his collaboration with the enemy and ransacked his home.
When the barbarian cavalry went south, his concrete fortress and "shaking thunder" had been waiting for a long time.
Lin Yan originally just wanted to be a free and easy king with land and leisure, farming and making inventions.
But the foolish king and treacherous ministers did not agree, and the princes from all directions did not agree.
Then don't blame him for using modern knowledge to carry out a dimensionality reduction attack on this ancient troubled world.
From a village, to a county, to the world...
