The so-called rule body naturally is not static; it changes as the cultivator progresses through the stages of the Rule Integration Realm.
When one first breaks through from the Sun Moon Realm to the Rule Integration Realm, the rule body is at its weakest. The particles of rules contained within the physique are sparse, some even fewer than ten.
However, this is just the initial stage. After becoming a cultivator of the Rule Integration Realm, control over the rule particles rapidly improves, which is vastly different from the tough understanding and enlightenment in the Sun Moon Realm.
Because the essence, energy, spirit, and soul have already completed their transformation, what was once difficult to comprehend now seems clear.
The truly stable stage of the early Rule Integration Realm involves directly understanding and controlling one hundred and eight rule particles to form a rule fragment.