Fragments of Youdu

In the depths of the city in the 1990s, Chen Mo, the last descendant of the Star Observation Bureau, relied on a volume of Xu Fu's "Fragments of the Nether City" and an ancestral soul-fixing compass to form a team of retired soldiers and archaeologists who returned from overseas. They traveled to the three taboo secret places of the Yellow River, Qinling Mountains, and Loulan, breaking the seals of the past dynasties, suppressing the evil in the Nether City, and guarding the final boundary between the human world and the underworld.