C586 The Relic of the Undead Celestial Thearch

"Aunt Bai! How did you know?"

"I don't know, but I know a trace of the Unfettered Dao Art. I know that if you have twin souls, once you enter the Land of Rebirth of Unfettered Dao Immortals... Then the mother and son will revert back to their youth, and this is the power of a Dao Immortal left behind by the Unfettered Dao Immortal!"

"This... actually..