The sweet rain of Jinlan Mountain, the more sought-after it is, the more valuable it becomes. Every Cultivator can use it, and it's more important for those with stronger abilities.
Because those strong ones mostly face two situations: either they can control it, but once it goes out of control, it becomes a huge problem.
Weaker Cultivators, taken over by the Heart Demon, may go insane and lose self-awareness after becoming Devilic.
And if a stronger one truly becomes Devilic, the situation may arise where their thoughts, consciousness, and concepts become Devilic, yet they themselves retain a clear consciousness, aware that they have become Devilic.
This situation, before the appearance of the sweet rain, was a point of no return, because they themselves did not want to turn back.
Yu Ziqing supplies the sweet rain purely based on mood, whenever he suddenly remembers, feeling that the sweet rain on the market has been almost consumed, he releases some.
