"I've read about an herb in the Dan Book, the Demon World Flower! It's said that an elixir made from the Demon World Flower can restore a human's heart."
The Demon World Flower grows in the depths of the most extreme part of the Demon Forest in the Demon World. It is said that the Demon Forest is a place of no return, where anyone who ventures there ultimately cannot escape death...
Moreover, the Demon World itself is extremely dangerous, not a place they can just enter without permission.
Thus, Mu Ruyue's method is as good as having nothing...
