It does no harm to anyone that a son-in-law visits his father-in-law's grave. As the saying goes, the son-in-law doesn't go to the grave, and the ancestors said, "The son-in-law doesn't go to the grave, and going to the grave insults the ancestors." Of course, this is just the rule of the ancients. Up to now, few people pay attention to this rule.

The ancients also said that there are three kinds of people: young children, elderly people and pregnant women. The reason why these three kinds of people are said is because the ancestors thought that these three kinds of people were weak and more vulnerable to things like going to the grave. The other is irrelevant people. Going to the grave is what our family should do. Even if our family has no leisure, don't ask irrelevant people to help us go to the grave.

The "three taboos" of going to the grave are as follows:

The first taboo is "a family doesn't burn paper twice", which means that future generations must go together to pay their ancestors' graves to show family reunion.

The second taboo is to add soil to the grave. There is an important custom of sweeping graves in Tomb-Sweeping Day, that is, adding soil. Adding soil means covering the graves of ancestors with a handful of new soil. Moreover, adding soil is also very particular. You can't add soil from the grave, you should dig from a place far away from the grave. The moral of adding soil is to repair the house for the ancestors, and you can't hit the grave with a shovel after adding soil.

The third taboo, avoid going to the grave in the afternoon. There is a time for people to go to the grave. The folk stress is to go to the grave as early as possible in the morning, and the time cannot exceed noon.