People say that they think about things day and night, but this is not entirely true. People or things that pass by in my mind by chance during the day often become dreams, while thinking about what I will dream or desire to dream before going to bed is often impossible.
One more thing, people often say that dreams and reality are opposites. In this sense, dreaming of the death of relatives, in reality, should not die, but should live a better life. Judging from the previous film and television works, if you really dream of the death of your relatives and friends, you often don't dream of his death directly, but dream that he will come to say goodbye and say that he will travel far or go back.