Blood (피, pi) carries one of the most genuinely surprising readings in all of Korean dream interpretation: rather than signaling danger or injury, blood is very often read as a direct symbol of money. The specific folk logic goes further than that too — the more blood there is in the dream, the more money is believed to be coming, an equation that catches most people off guard the first time they hear it.
Being cut, stabbed, or otherwise injured and bleeding, as long as the dream doesn't feel like a genuine health-focused nightmare, is read through this lens — the wound is almost incidental, and the visible blood is the actual message. This connects directly to the knife dream elsewhere on this site, where a cut that draws blood is read the same generous way.
Blood appearing on your clothing, hands, or surroundings without a clear source is read similarly favorably — fortune "staining" or attaching itself to you, close in spirit to a money dream but with a slightly stranger, more visceral image attached to the same basic good news.
There's an important exception worth being honest about: blood tied specifically to vomiting, illness, or a body that clearly isn't functioning right is generally read as a real warning about health rather than wealth — the money reading applies to blood from an external wound, not to blood signaling something wrong internally. Menstrual blood specifically is read differently again, leaning toward fertility and renewal, loosely adjacent to the taemong tradition elsewhere on this site.