Extreme Yang Spell
In traditional Chinese belief, what we call demons may actually be a manifestation of excessive yin energy. This can be neutralized by applying the opposing force: extremely potent yang energy. The following serve as demon/yin repellants:
The crowing of a rooster
Reading sacred texts and philosophy books is also believed to send malevolent spirits on their merry way because these create order, in which demons(which crave chaos) cannot thrive.