Tomb geomantic omen

This is hard to say! Has the inscription been moved or renovated?

If there is, it may be that the master who built your grandfather's grave turned Feng Shui upside down. Let your father or yourself invite Mr. Feng Shui to have a look. Because the Mr. Feng Shui you invited is on your side to speak for you.

See if feng shui has made everything go well for your father's second brother ~ ~ ~