Mount Qingqiu.
There are five major Secret Realms within the Nine-Tailed Royal City, each occupied by one of the five major clans. Only successive patriarchs knew that a sixth Secret Realm existed within the Nine-Tailed Royal City.
This Secret Realm was named Mount Qingqiu. Primeval ancient trees soared into the clouds across the boundless wilderness, everywhere exuding a primitive, primeval aura.
Chapter 871