Quantum physicist Qin Yu encountered a plane crash on his return flight after rejecting the sky-high price offered by European, American and Japanese capital groups. When he opened his eyes again, he saw that it was the Xianyang iron smelting workshop in 250 BC, and he became a slave about to be thrown into the furnace.
At this time, the young Yingzheng returned to the Qin Kingdom, Lu Buwei was in power, and the six kingdoms were constantly conquering. Even a qualified iron weapon was considered a rare thing.
"You ruined my return, so I forged a sword to crush the world two thousand years ago!" Qin Yu wiped away the blood on his face, his eyes burning with the fire of science and revenge.
He modified the double-action bellows, allowing the Qin Furnace to produce two furnaces of fine iron every day, and the hardness of the sword blade suddenly tripled; he drew a vernier caliper to set a "standard", so that the Qin army's weapons could be replaced as soon as they broke, and repaired as soon as they went into battle, which was ten times more efficient than the other six countries; he presented the blast furnace drawings to Ying Zheng, explained the logic of the county system, and even drew railroad tracks on the sand table: "Everywhere this road leads to is Qin soil."
From a slave to the "Engineer Order" of the empire, he modified crossbows, opened up roads, and built steamships. He used formulas as strategies and blueprints as blades to help Ying Zheng break down the barriers of the Six Nations.
"Destroying the six kingdoms is not enough," Qin Yu pointed to the end of the sea and sky, "we must plant the flag of Great Qin all over the known world."
When the Qin army crushed Handan with the trebuchet he designed, and when the ocean-going fleet sailed into the deep blue with the compass he invented, Ying Zheng looked at the "sir" beside him with only awe.
This is an epic in which scientists use knowledge to assist the First Emperor: replacing bronze with steel, using steam to break through the barbaric wilderness, and using the blood debt of previous lives as a guide to let the glory of Chinese civilization illuminate the world two thousand years in advance.
"Everything the sun and moon shine upon is the land of Qin - this time we will do what we say."
