Ye Cheng refused to answer this question, squatting in front of the corpse again, pointing to the hollowed chest and saying, "Look at the shape of the incision, the weapon is an ordinary osteotomy knife. This man is left-handed."

Seeing Su Wan's vacant and suspicious manner, Ye Cheng rubbed her head and smiled, explaining it kindly. Normally, people use their right hand. When they cut the knife, they will tilt to the lower left corner or the upper left corner inertially. If they are not identified carefully, these textures will be buried in the cut wound. However, the murderer is quite cunning. In order not to be found out that...