Dreaming of the dead grandparents and coffins.

You have such a dream, which means your grandparents haven't left yet. They love you very much, miss you and need your help. Simply put, you can burn more paper money in front of their graves and give it to them. If conditions permit, you can also go to the temple to "cross over" them. In this way, it is good for your late grandparents and good for you and your father.