(1) The nine-story demon building is located in dulan county, Qinghai Province;
(2) The "perfect country" in the story, including geographical location, ethnic origin, totem worship and so on, is all made up by the author. The truly perfect country is one of the 36 western regions that rose in the Han Dynasty, ranking between 15 and 20 in terms of national strength and status. This is not a very powerful small country ... now it is recognized as a perfect country near the "Niya" oasis at the southern tip of Taklimakan.
(3) Although the "iron-headed dragon king fish" in the novel is invented by the author, the "fishbone temple" actually exists. There used to be a ghost tomb in Dengcenzi, Tianjin today, which was invented by the author. However, although it is rare for the two dynasties to build tombs in the same place, it is not uncommon. In Shaanxi, people found that the tomb of Tang Dynasty was built on the tomb of Zhou Dynasty.
(4) Black Water City, the name of Xixia City, is now the northeast of Ejina Banner in Inner Mongolia. There are still 7 watches, but we have to rest now, +Q724830984.