The so-called Celestial Secret Skill is not omnipotent; the information it can uncover is very limited, but often significant discoveries can be made from this limited information.
The Micro Realm Sect has an applied technique called Clearing Skill, specifically designed to counter the Celestial Secret Skill. Although He Kao's cultivation with the Micro-Entry Skill is not very high, practicing this applied technique poses no problem for him.
Clearing Skill is a variant of artifact refining techniques, which involves erasing residual information traces on oneself and items.
Even if someone has cultivation that can gather Divine Qi, a master of the Celestial Secret Skill can still detect the residual environmental aura from their shoes, clothes, or carried items, thus knowing where they have been.
Using Clearing Skill can wipe away these traces.
