Is it necessary to hire a Feng Shui master?

My friend moved the graves of his parents and invited a "Feng Shui Master", and we all went to "praise" them.

I asked him: "Do you believe what you said?"

He said: "Whether I believe it or not is not the key. The key is to give the owner some psychological comfort."

I said: "Some people believe it, and some people don't believe it. To the superstitious people, just say some superstitious words. To the people who don't believe it, just say it's just a custom and it's harmless. You Wouldn't my business be much better?"

He said: "Thank you, you have helped me a lot! I will do this from now on."

After he said goodbye. He gave me a "Jadeite Stream" from the gift money he received as a token of his gratitude.

It seems that the theory of Feng Shui is pure nonsense!