How can people and ghosts distinguish between true and false Taoist priests regardless of age?

In this age when people and ghosts are indistinguishable, how can we distinguish between true and false Taoist priests? The role of Taoist priests is to catch ghosts, so we must learn the skill of catching ghosts. A Taoist who can't catch ghosts can't be called a real Taoist. But Taoist priests catch ghosts by magic, and scriptures and bells are actually props of Taoist priests. So on the surface, it seems that the Taoist priest has read a few verses, and the bell in his hand will jingle when it is shaken. But there are too many fake bells, and some poems have deteriorated, so laymen can't see his magic, so they are often deceived by his pretentious appearance. Therefore, not every Taoist can catch ghosts. People who don't know the skill of catching ghosts think that whoever has a bell can catch ghosts. In fact, they are wrong. From the point of view of duty, Taoist priests and ghosts are natural enemies. But with the changes of the times, ghosts have evolved, and some ghosts are good at camouflage. On the surface, maybe you can't tell whether he is a person or a ghost at all, and some ghosts are very powerful now. Ordinary Taoist priests can't fight him at all. Just like the evolution of ghosts, some Taoist priests have become too realistic. Although he has a bell in his hand, on the surface, he is a Taoist and should be able to catch ghosts, but in fact he is probably playing tricks. In real life, there are many such Taoist priests. Therefore, if your house is haunted, you should first judge whether it is GREAT GHOST or a child. If it is GREAT GHOST, you should invite a powerful Taoist. If you are unfortunate enough to hire a Taoist who is not strong enough or cheats on food and drink, you will not only fail to catch ghosts, but it is likely that ghosts will become more and more fierce. If you invite a Taoist priest who is engaged in mischief, there is a good chance that he will give your wine and food to the troublemakers. So how do you distinguish the mana of Taoist priests from the true and false Taoist priests? Just don't be superstitious about the bell in his hand, try to evaluate his magic. The best way to evaluate the Taoist priest's mana is to give him pressure and motivation, and to restrain him with clear rewards and punishments. For example, you can make an agreement with a Taoist priest. If the Taoist priest thinks he has the ability to catch ghosts, then you can make an agreement that when he ties up the ghosts and puts them in front of you, you will double his wine. If you can't catch the ghost, then you won't serve wine and food; If not only can't catch the ghost, but the ghost is becoming more and more fierce, then the Taoist priest is required to compensate for the expanded losses. If this Taoist accepts your terms, you can basically judge that he has real skills, because Taoist needs to drink. If he is not sure and does not dare to agree, such a Taoist should be worthy of your trust. If this Taoist does not agree with your conditions, but insists on drinking first and then catching ghosts, it is basically certain that this Taoist has no skill and belongs to the kind of gangsters who cheat by drinking and eating. It is better to find someone else.