Sheng, troubled times. Eunuchs control the imperial army, vassal towns support soldiers and respect themselves, and aristocratic families control martial arts and imperial examinations. What's even more troublesome is that this world has internal forces. Masters can live for more than a hundred years, and the most terrifying thing in the court is never the young people, but the living fossils who are "old but not dead". The imperial power was consumed to death by these people. When the Ninth Prince Xiao Jin woke up in the snow, the original owner of this body had just been publicly humiliated by his brother and froze to death on the palace road. The new soul is Chen Mo - a mechanical engineer and a history buff who believes that "thinking is a problem, doing is the answer." He had no system, only a wealth of engineering knowledge: steel frying, hydraulic blasting, gunpowder improvements, crossbow machine improvements, curved shaft plows, new military systems, and new tax systems. It also comes with a craft that no one in this world has ever seen before - internal force quenching: the performance of steel tempered by true energy is close to that of modern medium carbon steel. Technology and martial arts meet for the first time in this mountain and river. Hibernating, farming, training troops, carrying out political reforms, marching north, and going to sea. Those who climb out of the snow must re-weld the cracked mountains and rivers inch by inch.
