Male protagonist 1: Lei Chengdong
: The top "three-dimensional" scientist of the 21st century (nominated for the Nobel Prize in Chemistry, a master of theoretical physics, and winner of the Fields Medal in Mathematics) accidentally traveled to the Qin Dynasty.
Male protagonist 2: Ying Zheng:
Setting: Domineering and arrogant, but possessing strong curiosity and receptivity. He was deceived by Lei Chengdong into a "tech fan". His dream was not to live forever, but to plant the flag of Da Qin on the moon.
The heroine Mo Yuan:
Identity: The daughter of a wealthy man from the Mo family, a genius in machine arts.
Setting: Violent lolita, Lei Chengdong's "chief engineer". At first he wanted to kill Lei Chengdong (thinking he was a lackey of the violent Qin Dynasty), but later he was impressed by Lei Chengdong's "mechanical mechanics" and became his right-hand assistant and bodyguard.
Villain/supporting cast:
Zhao Gao: He is vicious and vicious, but he has been repeatedly tricked by Lei Chengdong's "black technology" into doubting his life.
Li Si: Not only was he jealous of Lei Chengdong's talent, but he also had to rely on Lei Chengdong's "operations research" to govern the country.
Xu Fu: Big liar, Lei Chengdong's mortal enemy, representing superstitious forces.
Overall plot
Chemical alchemy: Since the emperor wanted to take elixirs, Lei Chengdong directly refined "aspirin" and "penicillin", and even created "carbonated happy water" which became popular in Xianyang.
Physical Ascension: Using hot air balloons and hang gliding, Qin Shihuang experienced "walking on the wind", which was regarded as a miracle.
Mathematical governance: Use probability theory to sweep the six-nation casino, use calculus to calculate water conservancy projects, and use linear programming to optimize grain and grass transportation.
Industrial Revolution: In 210 BC, the steam engine was developed, and the Great Qin Cavalry became the "Great Qin Armored Division".
