All of them, including Gao Hongbo, are Immortal-level beings who have lived for billions of years. Naturally, they have seen various Transmission Arrays.
They have also encountered Transmission Arrays that consume such a terrifying amount of Immortal Aura, but generally, those with such terrifying consumption are for ultra-long-distance teleportation.
Although Tianxia Immortal Dynasty is far from the Land of Chaos, it is not considered ultra-long-distance, so logically, it should not consume so much Immortal Aura.
At this moment, Min Guanghua suddenly thought of an event that happened billions of years ago. Although he was not in the Land of Chaos at that time, the event spread throughout the entire Tianyan Immortal Domain, and he had heard about it.
Rumor has it that Chen King of the Tianxia Immortal Dynasty, under siege from various Super Forces, chose to come to the Land of Chaos, and finally, with nowhere to go, headed to the Chaotic Sea.