Can you add a memorial tablet next to the grave?

Don't set up a so-called memorial tablet, because whatever good deeds you or your ancestors have done, if you carve a tablet to stand there, this merit will be ruined. If you don't publicize it, then this is the benefit that Yin De can protect future generations. It is really of great benefit to ancestors. I suggest that you can put a solar-powered sutra player or a Buddhist chanting machine to worship a statue of Tibetan Bodhisattva in the ancestral tomb, which can truly transcend ancestors' sufferings and enjoy themselves.