Lin Hao, a doctor of physics, accidentally traveled to the northwest border town in the early Ming Dynasty. When he arrived for the first time, facing the simple living environment, he relied on his solid quantum knowledge and combined with the black technology concepts brought from the future to improve people's livelihood. He improved farm tools and increased food production so that people no longer suffered from hunger. He used simple optical principles to create simple street lamps that could illuminate the night, so that the city would no longer be dark at night. However, not long after the peaceful days, Oara forces quietly penetrated into the border town, and the White Lotus Rebellion was secretly brewing. Lin Hao was helplessly involved in this dispute. At a time of crisis, he met Yueran, a woman with agile skills and mysterious identity. The two of them worked together to explore, and unexpectedly discovered an underground arsenal left by the previous generation of time travellers, which was filled with advanced weapon design drawings and semi-finished products. Lin Hao found a treasure, and based on the drawings, he successfully manufactured flintlock guns and steam engines, armed the soldiers and civilians in the border towns, and reshaped the Silk Road leading to the Western Regions. Caravans continued to travel again, and the border towns were once again prosperous. But when Jingnan's army approached and Zhu Di's army approached the city, Lin Hao was faced with a difficult choice. Yueran was seriously injured and fell into a coma to protect him. What faced Lin Hao was to save the one he loved, or to use the modern technology in his hands to reverse the course of history and prevent the tragedy of the Jingnan Campaign. The fire of modern scientific and technological civilization that he ignited swayed in the dark night of Hongwu Year, and finally, like a quantum moon, penetrated the fog of history and illuminated the unknown road ahead.
