Xiao Lou's major was forensic medicine, specializing in toxicology. However, he had been a fan of detective fiction and escape room games since childhood, so he was very familiar with the basic process of deduction.

When the police are investigating a homicide, locating the primary crime scene is extremely helpful in solving the case.

The reason Xiao Lou determined this wasn't the primary crime scene was simple.

The heart is the blood supply center of the human body, like a powerful pump, pumping blood throughout the body with its steady beats every minute. The victim's fatal wound was in the heart, and the knife had been inserted close to the aorta. If the victim had been stabbed in bed, the aorta would have been severed, and the gushing blood would have splattered onto the pillow, sheets, and even the wall.

The surroundings were clean, with no trace of blood splatter. Her blood only soaked through her chest. Judging by the amount of blood lost, it was about 100cc, less than half the amount a normal person would lose at a charity event. She had clearly been murdered elsewhere, and only carried to the bedroom bed after she had bled out most of the blood.