Tomb-Sweeping Day's combination problem

If you can't be entrusted by your children, they will shovel the soil first when digging, and before digging, they will put offerings to burn incense and pray, explaining the reasons for disturbing their parents. Both parents pay attention to this. The people involved have respect, that's all. The two old people are in the spirit of heaven, which will bring good luck to the good-hearted people who help move and complete the reunion of husband and wife.