There were no medical records inside, only a few outdated medical journals.
He trembled as he brushed aside those magazines, his fingers searching along the inner wall of the drawer, his nails scraping against a tiny protrusion almost fused with the wooden surface.
Pressing hard, a subtle "click" sounded as a thin board at the bottom of the drawer sprang open.
Below was a secret compartment.
Lying inside it was a small, transparent glass ampoule.
The glass was smooth and cold, containing about 10 milliliters of liquid. The liquid was as clear as water, without any color or smell.
10% concentration potassium chloride injection solution.
As a surgeon, he was all too aware of the terrifying potency of this seemingly harmless liquid.
Potassium ions are crucial for maintaining the normal electrophysiological activities of myocardial cells.
