The tip of Gu Weijing's pen danced across the paper.
"The location of the rectus abdominis is from the pubic symphysis to the rib cartilage, which is between the fifth and seventh muscles. Its function is to stretch the chest. The left muscle is slightly larger than the right, which is likely due to uneven exertion during exercise..."
"In a relaxed state, the spine and scapulae are hidden beneath the skin, but his arm is waving the bills, slightly contracting due to exertion and creating a depression. The large bone supporting the forearm swings around the elbow's hinge."
He murmured to himself, and the brush in his hand was like a sharp scalpel, swiftly dissecting the man in the bat coat in the photo into strands of flesh and bone.
This is the muscle on the torso.
This is the muscle on the limbs.
These are the lines on the neck,
These are the proportions of the gloved knuckles.
...
Soon, Gu Weijing had a thick stack of drawing paper in his hands.
