More than a year after his mother died, so did his father. Does this have anything to do with my mother's grave?

According to Feng Shui, some graves are related, while others are not. You can find a better Mr. Feng Shui. According to Buddhism, this is everyone's fate. Ordinary people can't change cause and effect without practicing. If evil matures, it will turn into bad luck, just like firecrackers meet fire. If the father's death is related to the cemetery, the cemetery only helps fate, mainly his own fate.