Shi Yan, a time doctor who walks alone in the cracks of time and space, has no system, adheres to the principle of "not disturbing history", uses the collective memory of civilization as a medicine, and specializes in treating the "time and space heartbreak syndrome" caused by major trauma to the will of civilization. He once sorted out the family letters and memories of 400,000 deceased souls in the ancient battlefield of Changping, awakened civilization's attachment to the world of fireworks in the ashes of Epang Palace, and healed the faults and confusion of the ancient civilization of the earth among the Liangzhu jade congs and Sanxingdui bronze sacred trees.
During an interstellar consultation, he used the twilight of the earth's civilization to heal a super civilization that was on the verge of ascending to another dimension and being annihilated. However, he also accidentally touched the darkness deep in space and time - the predators who took pleasure in devouring the will of civilization were quietly extending their claws to the earth. As the footprints of diagnosis and treatment spread across the sea of stars, from the symbiotic cracks of the crystal civilization to the mad will of the gaseous Wind Clan, the pocket watch in Shi Yan's hand gradually revealed the inheritance codes of previous generations of doctors, and also revealed the ultimate conspiracy of the "Nihilist" behind the predators: to dissolve the meaning of all civilization and destroy the original singularity of time and space.
In order to protect the foundation of civilization's survival, Shi Yan gathered interstellar allies, using memory as a shield and bonds as blades, going back and forth between the nodes of Earth's ancient civilization and the interstellar battlefield. When the Void tears apart the branches of the singularity, and when the mission of inheritance falls on the shoulders, this diagnosis, treatment and protection across time and space have long transcended individual boundaries. The dormancy of the Void, the secrets of unknown dimensions of time and space, and the traces of another line of physician inheritance all indicate that this civilizational echo is far from its final chapter.
