Lin Yan, a former botanist, was transferred to the ancient book warehouse of Chaotian Palace in Nanjing due to an accident. While repairing a batch of banned medical books from the Ming Dynasty imperial hospital, he accidentally activated the "Paper Lifespan for Thousand Years·Ink Veins Tongxuan" system. He discovered that these ancient books were not dead objects, but "biorhythm programs" left by ancient people. Lin Yan must physically repair ancient books (removing insects, filling holes, and adjusting ink) to decode the medical mysteries contained in them. At first, he was regarded as a "magic stick" by the orthodox medical community and as "not doing his job properly" by the ancient book community. However, with his unique perspective of "seeing books as people and people as books", he used rice paper fibers to regulate the humidity in the ward to cure lung diseases, and used ancient ink ingredients to solve mysterious cases of poisoning. As the restoration progressed, he not only restored the lost "Acupuncture Atlas of Imperial Physicians' Hands", but also developed a "golden finger" that is sensitive to subtleties through countless "virtual acupuncture" in reality. Finally, in this era of decline of traditional Chinese medicine, he used the most traditional method of paper and ink to reshape the spirit of medicine in a great country.
