Outside Kunlun, there were many Ruins Realms and planets.
100,000 years ago, these Ruins Realms and planets were all dependent on Kunlun. At the same time, they were also the hub of Kunlun's protective array and the war fortress against the Infernal Court.
Unfortunately, after Saint Monk Xumi's divine power sealed Kunlun off, entering and exiting Kunlun became difficult. These Ruins Realms and planets became desolate or chaotic places.
It was not until a thousand years ago that Saint Monk Xumi's divine power was greatly weakened, and it became much easier to get in and out of Kunlun.
It was precisely because of this that 500 years ago, after the first Central Empire was established, Empress Chi Yao found the Chaotic Myriad-Realm Ridge outside the realm. She led the cultivators of Kunlun to wage a war of unification against the various Ruins Realms and planets.