Seeing Xu Yinhè's expression, Xu Yuan tentatively asked,
"After twenty thousand years, the formations carved inside these Sumeru Rings must have deteriorated already, right?"
He had previously discussed the matter of the Sumeru Rings with Xu Xinyao.
The rarity of the Sumeru Rings was due to three reasons: first, the assistance of a Saint was needed; second, an Array Master was required; third, the unrestricted mining by the Sects of that era who used Levitation Stones to create their own Secret Realms, leading to the near extinction of Levitation Stones in this world.
The first two issues could be resolved, but the third was an impasse.
Xu Xinyao had even said that in a few thousand years, perhaps this world would no longer have such a thing as the Sumeru Rings.
Xu Yinhè did not answer immediately but glanced at Xu Changge beside him.
Understanding the hint, Xu Changge took out his Tianxun Crystal Orb and started contacting Jiang He at the Geometry Institute.
A moment later,
