Li Muzhi, a modern engineer, traveled through time and became an orphan from a military household in the Mongolian Empire.
His mother is Han Chinese and she secretly taught him Chinese characters and named him "Mu Zhi".
Forgetting his household registration name, this identity saved his life and allowed him to answer the same question throughout his life: Who am I?
From the day he was incorporated into the army craftsman battalion, he had only one goal to survive.
But he lived differently from others.
Others rely on swords and horses, but he relies on technology.
When the Khorasan plague broke out, he built isolation areas and implemented disinfection measures, saving the lives of a whole city.
Exiled to the ruins of the Dnieper River in the westernmost part of the empire, he led 20 people to build wells, build walls, open up wasteland, and build a city of hope on the ruins.
When the army of the Golden Horde approached the city, he used firearms to smash the charge of the steppe cavalry.
The European knights lined up on the banks of the Danube River, and his three-stage alternating shooting formation made heavy knights a thing of the past.
From exile to king of the north, from Roman emperor to Khan of all Mongolia
What he relied on was not swords, but ditches, plowshares, firearms, and a code stone engraved with "regardless of birth".
He conquered half of the world, but found that he could not conquer the problem in his heart.
Sixty-three years later, he returned to a deserted grave without a tombstone outside Diaoyu City, knelt down, and put down a handful of black soil from the Dnieper River:
"Mom, I am Mu Zhi."
