According to geomantic omen, when the tomb was moved fifty or sixty years ago, there was a little red in the tomb soil. What if it's just a little blood?

Agree with the first floor, if it is caused by essence. This used to be a land of feng shui, that is, moving the grave, and the consequence was the decline of future generations. Unless you have a better place to bury Feng Shui and meet a master who can bring luck to you. Difficult, it used to be a self-built tomb, but now it may be taken to the cemetery.