Why do fortune tellers blow their mouths?

Fulu originated from the orthodox school of Taoism in China (specifically, please call it Baidu orthodox school), and Taoism called it the ancient yogi. They think that you can absorb the aura of heaven and earth (or immortal soul) through breathing and breathing, and blow when giving you a spell to stimulate the function of the spell.

By the way, it's true that fortune tellers do eight-character divination, but giving operators is nonsense and the major is wrong.