Is fortune teller Zhang Yonghong a liar? Did he invent the law of life and death to cheat money?

As long as the Zhouyi is studied to a certain extent, a person's birth and death can be calculated. He didn't invent this to cheat money. People who can only speak Zhouyi may find it amazing.

Besides, life and luck will also change. Accumulate virtue and do good, and life grows slowly. It is impossible to draw a complete conclusion with a ruler.