Li Shiming sensed the thundercloud. After the Heavenly Ghost devoured the Heart Demon, it slightly reinforced the state of the thundercloud, allowing it to continue to exist, and the Thunder Rules were still functioning.
However, this thundercloud was originally maintained not by Spiritual Energy, but by Spirit energy, so its thunderous might was very weak, and the Thunder Rules supporting the Grotto Heaven seemed extremely tenuous.
He approached the thundercloud and began examining the Thunder Rules.
In such a Grotto Heaven without a half-step Great Power, the internal rules have no protective measures; the rules are seemingly exposed and allow observation of the entire Thunder Rules.
No half-step Great Power would willingly let a cultivator observe the rules within their Grotto Heaven, as these rules are the result of a lifetime of research by the half-step Great Power.
