Is it because of the old grave that three people die in a year?

Not necessarily, there have been cases in our hometown. Three of our seven people died overnight, and all of them died at the same time. Later, a fortune teller came. The fortune teller said that the house was built on a grave, and another one would die the next day, with the same symptoms, and then the material would be fine if it fell off. Now is the explosion of wealth. The real thing happened when I was a child. I can't explain clearly.