The day before my birthday, I dreamed of a dead man and an old man, clearly visible ~ ~ ~

You may feel strange when you have this dream, but the experience in the dream should have a shadow in your life, not the specific things you have experienced, but what you have seen and heard has prompted your brain to leave some residual impressions in your subconscious, which may reappear in your dream or distort the original experience.

Everyone dreams, which is normal brain activity. There is absolutely no need to give it a sense of mystery.

In addition, dreams can't predict anything, but if you know some psychology, you will know that if you find some dangers and don't pay attention to them, your brain may reprocess the information in your dreams to warn you.

As for your itinerary, you can go safely and be vigilant when you have nightmares for a long time.

Your condition is completely normal!