12.2 Trust him, trust me

To mask an aura means to hide one's soul from other practitioners, even vision soul practitioners. This helps keeps your power level hidden, but also makes your presence equal to a cat, so someone with pride would never use this method even if the high standing tree catches the wind.

To mask an aura, one can use pills, artifacts, or one's own spiritual consciousness. However, all these methods fail in front of a high level practitioner as they break through all layers of spritual feilds below their level easily. So the methods you use must be able to withstand those high level practitioners.