In 2024 AD, Shanghai financial manager Lin Yuan accidentally crossed to the border of Chanzhou in the fifth year of Taiping and Xingguo in the Northern Song Dynasty (980 AD). Relying on his knowledge of history and his portable lighter and flashlight, he improved the beacon system and strengthened city defenses to survive in troubled times.
However, after rescuing Princess Qi's maid Xiaodie, Lin Yuan was involved in the imperial power struggle and discovered a shocking secret: the time traveler Li Ming was killed six years ago, and an organization called "Time and Space Hunters" is systematically eliminating the time travellers. The leader "Shadow" is actually Zhao Yuanfen, the son of King Jin - his consciousness is covered by the memory from 2044, and he plans to open a space-time rift with a sacrifice on the night of the Seven Stars to lead the future army.
In order to prevent this catastrophe, Lin Yuan gave up the opportunity to return to modern times and formed an alliance with the famous general Cao Bin, Shaolin monk Huineng, and scientist Shen Kuo. From Luoyang to obtaining irrefutable evidence of King Jin's rebellion to Jinling to destroy the altar, they struggled to survive in the flames of war. Finally, on the night of the decisive battle at Purple Mountain, Xiaodie, who has royal blood, took the initiative to let go and be involved in the turbulence of time and space in order to destroy the rift.
After the war, Lin Yuan refused the reward and founded Gewu Academy in Hangzhou, integrating modern knowledge system into ancient education. Nineteen years later, the adopted mute girl Lin Mo awakened the ability to sense time and space and became a bridge connecting the two worlds. Every nineteen years, when time and space ripple, Lin Yuan can briefly sense Xiaodie, who is spreading civilization in another time and space.
Thousands of years later, modern researchers discovered the imprints of time and space in the academy's ancient books and crabapple flowers. Only then did this watch and inheritance spanning thousands of years become known to the world - the original deepest concern will eventually turn into an immortal star in the long river of civilization.
