Dreaming of coffins is good. The Duke of Zhou recorded that "promotion" and "making a fortune" are well known all over the world. Dreaming of the dead is also good, which indicates that you will have new initiative, but now there are different views on dream interpretation. According to general psychology, dreaming of a calm scene, including a dead person, means that your subconscious mind is getting the best state from the analysis of self-adjustment, or that your feelings have calmed down and you can deal with the problems around you rationally, or that you have a plan for the upcoming exam, or that you will know something about the problems you are puzzling over, and so on. In short, this is a sign of success.
If it's not good to dream of an empty coffin, it's good to have a dead man in it. Having a dead man's coffin means an increase in income. To dream of carrying a coffin with the dead is to share money with others.