If this is the first time you have had such a dream, it means that you may be in love or want to get married recently, and you are looking forward to having a home. If you already have a home, you may feel guilty about it and put the key in the safe to show that you will compensate the family in the future.
Another possibility is that you have watched too many butterfly war movies recently, and they have infiltrated into your subconscious mind to form images, which are played back in dreams and combined with TV scenes and personal actual situations to form such dreams. .
If you want to ask Duke Zhou, two netizens gave the answer.