Each mainland has its portal that connects to the astral world. The blue king's portal door was above the ocean, and the red king's gate was in the middle of a misty forest.
The exact location of the portal door would change according to the birth of the owner's life energy.
If the red king were born on the European mainland, the forest near the newborn birthplace would be used for his portal.
And now the gate to the Flame King's astral world moved to Asia as the new red king was born in China.
The only thing that stayed the same was the portal connecting the human world and the Vectis realm. That is in Kiria kingdom, Africa.
The rulers of nature were forbidden to set foot in Africa, especially in this kingdom of Kiria. Since the portal door was not locked, it would be easy for humans to see the ruins of the ancient palace where the portal door was located if the rulers' energy accidentally erased the illusory traces around the ruins of that place.