True dream against dream is the traditional name of China. "Positive dream" is more like a narrative dream, that is, it truthfully describes a psychological state. For example, I am very enterprising in reality and dream of climbing the peak; "Anti-dream" is more like a "compensatory dream", just like saying that the reality is poor and the dream is to get rich.
Why do I also think about problems I don't understand during the day in my dreams?
Dreams are related to what you do during the day. It shows that the dreamer is extremely involved in thinking about a problem during the day and mobilizing the energy of the subconscious. Then when the consciousness rests at night, the subconscious will continue to work. Some important discoveries in science are sometimes discovered or inspired by scientists in their dreams.
Why are all my dreams black and white?
Generally, we don't pay attention to the color of dreams unless the color in dreams catches your attention. If the "black and white tone" attracts your attention, there are two possibilities: one is that your spiritual life lacks color, and the other is that you may have compulsive psychological tendency.
Why did I dream that he had an accident and the result really came true?
Not "fulfilled", but coincidence. Of course, the coincidence here is also well-founded, which shows that you pay high attention to him. Just as a new mother is sensitive to her baby's every move, others can't hear her baby wake up, but her mother can feel it.