The evidence is that the Blood God Sect's outpost hidden in Tongdu two years ago was burned by a mysterious person, proving the source of holy blood used by Li Cunxu for the Blood Banquet Holy Meal.
All the exposure by Lin Miaomiao was arranged by Li Shiji, and approved by Li Cunxu.
Li Cunxu needed to expose secrets to reasonably explain why Xiaoruan, as a Slime, was so powerful, to reduce curiosity from people and the four gods.
Using one secret to cover up an even bigger secret.
Covering Xiaoruan's infinite growth talent "Slime's Soul Kingdom" with the secret of the Blood Lotus Eye.
Exposing the Blood Lotus Eye would only attract the attention of the Blood God Sect.
If the divine bestowment is exposed, the four gods would target him at all costs, even sacrificing the Evil Divine Son to nip Li Cunxu in the bud.
Apart from reasonably explaining why he is so powerful and hiding a bigger secret, there are two other purposes.
One is: To shelter his sister from the storm.
