Have you ever seen Feng Shui? What strange events have you encountered during this period?

In China, a family's children earned some money by working outside, and went home to build a two-story small brick house for two old people. But not long after, the two old people began to feel uncomfortable, couldn't eat well and couldn't sleep well. Their pig was grumpy and thinner. Later, it was suggested that they find a feng shui master. The feng shui master talked for a long time, saying that this place was the Dojo of the Bodhisattva, and lived here and made a "demon". They wanted to tear down the house and move, so they asked if there was any other way. The Feng Shui master said that they would move the grave, ask their ancestors to come and apologize to the land god, transplant some trees in the ancestral grave, and build a land temple the size of a desk. Of course, I didn't believe it easily when I heard about it, so I went to have a look. I don't know if I don't see it, but I was cheated at first sight. It turns out that this place is very strange, and there will be a slight deviation in the compass at home. Behind the house is a mountain road. Although it is a mountain, there are many pebbles, which shows that it was a river a long time ago. However, I really know too little about the Feng Shui sent by the Feng Shui master, and I didn't realize the mystery. Later, the two old people moved their ancestral graves to the back of the house, transplanted some pear trees, and really built a stone temple of about two square meters on the side. It was not long before the lives of the two old people really returned to normal. When I went to see it again a year later, the compass was already normal. This is the only clue left. I can only explain it by changing the geomagnetic field. As for the real theory, we need to explore it, or ask someone who has had similar experience to explain it.