Does the wife's childlessness have anything to do with the ancestral graves?

Wife's absence has nothing to do with ancestral graves. You can take your wife to the hospital for a physical examination. See what's wrong with him, because medicine is very developed now, and you can know what's wrong with him as long as the instrument is on one side.

You both need to check it out. Don't say that women can't have children. In fact, some men are infertile and will be relieved after the examination. Infertility is very common now. It is good to see a doctor if you are sick, and to have a physical examination if you are not sick.

Never be superstitious about old ideas and concepts, it is meaningless. Now is the age of science and technology, so we must believe in science. The society is progressing and people are looking forward, so don't think about those things that were backward before.