In 2026, top physicist Lin Su accidentally triggered a closed time-like curve during an experiment to verify loop quantum gravity, and traveled back to the first year of Qianxing in the Northern Song Dynasty.
When he woke up in the wilderness, he found that his body was locked in the quantum state of time and space, and he gained the power of immortality.
In this era when Confucianism prevailed and theories of gods and ghosts were rampant, he relied on his modern physics knowledge to use atmospheric pressure to "suppress" the copper ball, use the law of buoyancy to "save" the canal ship, and use the earth's revolution theory to correct the Song Dynasty calendar. Step by step, he changed from a "monster" to an "immortal" respected by the government and the public.
However, the journey home was far more dangerous than he imagined. The strange meteorite under the Daqing Palace is the anchor point for his journey and the source of the time and space trap. He once tried to use modern technologies such as steam engines and electromagnetic coils to open the channel, but he received warnings from his future self again and again - those failed attempts had already trapped his remaining soul in the gap between time and space.
In the end, he understood that the real way back does not require steel and energy, only himself.
Within three years, he used the power of the whole country to ignite the industrial fire of the Song Dynasty, and also used his own power of quantum entropy reduction to calibrate the time and space string that traveled through thousands of years.
When he finally set out on his way home and looked back at Bianliang in the snow, he was shocked to realize that he was not only a traveler going home, but also rewritten two nodes of time and space.