Since learning the Aura Concealing method from Su Clan's Sixteen, Song Shuhang had used it whenever he had the chance during his daily life in order to quickly increase his mastery of the skill.
Things weren't that bad while in the Third Stage Realm, but after a cultivator advanced to the Fourth Stage Realm, their innate true yuan would make ordinary people feel quite a bit of pressure. As such, unless he could quickly increase his mastery of this skill, he would have a few problems hanging out with ordinary people after reaching the Fourth Stage Realm.
Today, Song Shuhang was also concealing his aura, and this trip to the bathroom was no exception.
Anyway, the 'Aura Concealing' method could be used in two different ways.