Lin Mo, a 27-year-old museum intern, was bound to the "cross-time and space live broadcast system" by a piece of Warring States jade while sorting cultural relics late at night. He was then hunted by a cross-time and space organization called "The Cleaners" from modern times, vowing to erase all traces of his changing history. He was forced to connect to the Xianyang Palace of the Qin Dynasty. When Ying Zheng first met him, he sternly asked, "Who are you?" Lin Mo used lighters, flashlights and corn seeds to win the emperor's trust step by step.
From Dr. Tiance to Dr. Tiance, he promoted curved shaft plows, cement tracks, and sweet potato compost, filling the Guanzhong granary; he taught sterilization and suture, and flintlock guns, which helped Meng Tian defeat a hundred thousand Xiongnu horsemen; he displayed world maps, automatic rifles, and armed helicopters, and asked countries around the world to actively request inclusions. When the system popped up the ultimate mission - to exchange amnesia for the opportunity to change history, Lin Mo chose to give up and stay in the Qin Dynasty to witness the continuation of his dream. In his later years, he traveled around the world, carved "Doctor Tiance" on Mayan sarcophagi, and left the Nazca Lines in South America. Two thousand years later, these ruins have become an unexplainable mystery in the archaeological community. After Lin Mo passed away, the jade pendant was donated to the museum and no longer shines. But he who believes, always believes.
It is not the traditional "traveling through the harem", but the hard core of modern knowledge to transform ancient times, from a grain of corn to an armed helicopter, from Xianyang Palace to the whole world. The confidant relationship between Ying Zheng and Lin Mo, which spans two thousand years, is the most touching soul in the book.