For example, in the case of 1, many researchers believe that this is because in people's daily life, these scenes already exist in people's subconscious for some reason, so when dreaming, this kind of thing is uncontrollable, and the scenes that need to be created in dreams are automatically extracted from people's subconscious. Like this type of dream, if you dream that you are crying very sadly, it is probably because there is something wrong with your daily life, and you have a bad impression on something or someone subconsciously, and your personal mentality is not very good, which is called daydreaming, who dreams every night. In the second case, medically, it can be explained that after people fall into a deep sleep, the brain actually doesn't rest, but the state inside the brain is more exciting than during the day, so in this exciting environment, the brain will start its own dream session, and most of these dreams are meaningless, which is why people often say that vision is the opposite. From the superstitious point of view, dreaming that you are crying in your dream is a good omen, which means that your future life will be very happy. But in either case, as long as the dream doesn't bring too much influence to yourself, it is harmless. Dreaming that you are crying, if it is because the pressure in real life is too great, then we should solve this problem from a realistic perspective and relieve the pressure from our usual life. And in the daytime, people may be in a complicated environment, but they can't vent their emotions and cry, but they can get a good way to vent their emotions in their dreams, which is also a good way to vent their emotions.