It was because the immortal stars needed immortal treasures to form a formation.
When the 1,000 immortal flags shook simultaneously and showed their might, they could transform into a power formation, the Immortal King Banhu's Formation!
According to Fang Jinyu's information obtained after entering the Purple Celestial Star, the Immortal King Banhu's Formation, which required over a thousand immortal star treasures to form, could have the power of an immortal king's attack.
As for whether it was the truth, Fang Jinyu didn't know either. However, it should be the truth since Immortal King Green Supreme left such a message.
After all, even if it weren't the truth, as long as Immortal King Green Supreme put in some effort, the array formation would have the power of an immortal king!
At this moment, Fang Jinyu's ambiguous answer deepened the misunderstanding among the True Immortals. They looked at the immortal stars even more passionately.