Because blood is a colloid, after a long time, the colloid particles inside will be adsorbed and sink, and there are platelets in the blood, which will accelerate the blood clotting. Maybe a small part of the blood will be because of the platelets and scab (like injured, cut hands and so on), a large amount of blood can only let it become peptonized solid. And raw powder is dusty, while water has the ability to cool it down! So in connection with the previous content, that should be it! (Flying Zero is powerful)! (*^__^*) hehehe