But generally speaking, blood represents affection, affection, friendship, love, or something more important to oneself.
I dreamed that something sucked my own blood, maybe it was some kind of blow, and my feelings became fragile, and I paid a lot, but my return was very little.
In addition, dreams are also related to external stimuli during sleep. For example, there may be mosquitoes or other things that hurt the body, which will also cause similar dreams.