The perimeter around the Dark North Kingdom, like all country borders, had a spirit design border.

This spirit design border had been passed down from ancient times. It was like the protection spirit design of sects - it could defend, attack, and prevent intruders from entering the borders of the Dark North Kingdom.

Each martial cultivation kingdom had its own national borders. The nation's spirit design was huge, and spanned all its edges, the sky, and even the ground, it had a long legacy of generations and was impenetrable. Even Dao Querying Three Disasters Realm cultivators might not be able to force their way into a foreign nation, let alone Primordial Spirit Transformation Realm cultivators.

One not only needed overwhelming strength, but also the way to break the spirit design, or some other method to force entry. But basically, such a technique would cause a huge commotion and attract the attention of the experts in the Dark North Kingdom.

However, the second tier of Wu Yu's Somersault Cloud could possibly do it - leap into the nation without raising the...