As she was sent flying, Ning Xuan felt a piercing low-frequency sound wave stab into her temples like a steel needle, churning her entire brain. The air in the laboratory suddenly grew viscous. Blue and white spots of light exploded across her retinas as if someone had thrown a handful of sand into her eyes. The rapidly flashing specks made her feel as if her eyes were a malfunctioning monitor about to go haywire.
Ning Xuan's throat suddenly tightened. A wave of nausea hit her, and bitter acid surged up her esophagus. At the same time, a weightless, dizzying sensation washed over her, and her eardrums throbbed with pressure. She felt as if she were plummeting into a bottomless abyss.
