A Novel That Doesn't Deserve Its Name (Cultivation of Immortality)

In a world of cultivating immortals where they grow by plundering others' strength instead of cultivating themselves, Tang Yuan and her allies are searching for the mystery of their past lives. What is the gray world in their memories? Did that mysterious white stone take her to a long time ago, or to another world? Intention: There is no light in the darkness, only the truth is revealed