People claim that they have a master who can show evil and eliminate yin. Is this true?

This kind of "fortune teller" is true or false. Generally speaking, fortune tellers are fox fairies and weasel fairies attached to her/him, but different people have different lives to make money by fortune telling, so she/she is doomed to be accurate and time-limited. So maybe they were accurate at first, but after Xian left, they began to make up things to make money and deceive people. I hope the subject can find a reliable person to calculate!