The Two Bosses, the Emperor and the Queen, Engage in Industry but Not Love.

Double strength, double penetration + big heroine + hard core technology + double doctor time travel + industrial revolution. The emperor, a doctor of chemistry, improved gunpowder and developed medicine, and the queen, a doctor of physics, designed artillery, built cement roads, and developed steam engines. These two modern people set off a hurricane of the industrial revolution in ancient times. The ultimate contrast between the emperor and the empress - she set rules for him: when talking about official matters, make excuses, and when talking about private matters, he will be beaten with a stick; he suffered repeated defeats, and it took him three years to go from being beaten to being able to eat at the same table. There is no female competition in the harem, the concubines are in harmony, the queen mother goes from confrontation to cooperation, and the human perspective of all the staff highlights the unique relationship between the emperor and the queen.