Immediately, the crescent-shaped key to the Secret Realm transformed into a streak of light and disappeared within the altar. The mysterious patterns on the altar's surface glowed, and a beam of light projected from it, opening up an elongated space gate above the altar, which was still completely closed.
It was similar to the gates of the Secret Realm of Challenge they had encountered before.
However, this Secret Realm's Gate was under the jurisdiction of the Tianyuan Territory, and it could open or close at his mental command. Of course, he had to wait for the Secret Realm on the other side to truly open before he could initiate the process.