The dead relatives became immortal.

According to dream interpretation, your dream is 1. You dream of a dead man, and this dead man is your father. Then the solution is that you should be a dutiful son and take good care of your mother. If your father becomes a fairy, then you will dream of a fairy and you will have good luck in the future. Take good care of your mother together and be a dutiful son in the future. You will have good luck!