"But the fact is just the opposite—we observe that this patch remains clearly visible after incision, and the color does not significantly fade due to a change in position."
"This inversely proves that the color in this area is not due to the post-mortem blood pooling caused by cessation of circulation, but is a hemorrhagic lesion formed during life."
"Moreover, we can further infer that this bleeding occurred while the victim's vital signs were still present."
"Because during the survival period, once blood vessels rupture, the body's coagulation mechanism immediately kicks in, forming a degree of blood clots."
