Son dies first, father dies later. Can two people hide in a cemetery on the same day?

According to the old rules, after the death of a son, whether he is married or not, he can enter the ancestral grave. No matter whether the daughter marries or not, she can't enter the ancestral grave. Married women can visit their husbands' graves, and unmarried women can also visit their husbands' ancestral graves after marriage. Before the death of the elder, the children should be stored elsewhere, and they can only move into the ancestral grave after the death of the elder. Burial customs vary from place to place. In some places, people who don't get married or have no children after marriage can't go to their ancestral graves, especially those who die young. Of course, it is recommended to follow local customs. It doesn't matter, you can be buried together, the body is not important, the soul is the key.