Luo Zhenren always tells people not to be afraid of ghosts. He advises that if you meet one, you should use a technique called "conquering the invisible with the invisible." This involves blowing at the ghost.
He maintains that ghosts are most terrified of human breath. This method is far better than slashing wildly with a knife or a stick, even though one may think a knife would be more effective.
Zhang Qishi is of the opinion that when you meet a ghost you should not be afraid. He argues that it is more important to fight it straightaway.
If you win the fight, then you're to be congratulated. If you lose, then the worst that can happen is that you'll become a ghost yourself.