Avenue of Immortality

From the beginning of the Qin Dynasty, Qin Shihuang sent Xu Fu to the East China Sea to seek the elixir of immortality in order to live forever, which meant finding loneliness. The Yellow Emperor's Internal Canon records that I heard that there was a real person in ancient times who grasped the heaven and earth, grasped the yin and yang, breathed the essence, and independently guarded the spirit. What is the so-called longevity? What is behind this so-called longevity? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.