A doctor of medicine accidentally traveled through the late Sui Dynasty and became a descendant of a fallen noble family. He also received a three-hundred-year immortality limit and a "historical node resonance" golden finger - touching key figures or objects can reveal fragments of future history. From the rescue of Yanmen when he met young Li Shimin for the first time, to the secret incident at Xuanwumen to help the King of Qin seize the rightful son; from the establishment of the first wounded soldier camp in the Tang Dynasty, to the improvement of field first aid to save the Xuanjia Army; from the construction of mobile medical vehicles during the Anshi Rebellion, to the Dunhuang Sutra Cave to protect medicine Classics... As a military doctor, he witnessed the rise and fall of the Tang Dynasty. He used modern medical knowledge to improve Zhixue Powder, promote variolation, and establish an epidemic prevention system. However, he always adhered to the principle of "history is the bone" - not subverting the change of dynasties, but only protecting life in details. The inscriptions on the silver pot record three hundred years of time. He saw the prosperity of the Zhenguan period and witnessed the bloodshed of the Anshi Rebellion. Finally, in the afterglow of the Tang Dynasty, he hid the "Secrets of the Outer Stage" and the "Military Traditional Chinese Medicine Code" in Dunhuang, leaving the spark of civilization in troubled times. When the news of Zhu Wen's usurpation of the Tang Dynasty came, the Immortal finally understood: the three hundred years of witnessing were not to change history, but to protect the benevolence of those doctors who were struggling in the torrent.
