Some domains, even without a powerful Immortal presiding, yet have the great forces within the domain with Immortal ancestors in the Thirty-three Heavens. If necessary, they could kill their way back to the lower world.
Han Li was quite knowledgeable about these matters, having gathered intelligence from within the Xuxian Realm, so he had no thoughts of venturing out and decided to just survive in the secluded Yuankun Domain.
Actually, the Yuankun Domain also contained a terrifying calamity that was even more dangerous than other domains in the Taichu Realm. Once it erupted, perhaps not even Golden Immortals or Immortal Kings could withstand it.
Fortunately, such a calamitous disaster followed a pattern, erupting only six times each era, and over countless eras, there had never been one more or one less.
