"This is... Yin-Yang Exchange."
Li Xu mulled it over for a moment before giving his diagnosis.
"Yin-Yang Exchange?"
The person who spoke was none other than Director Zhu.
His voice was filled with surprise, and a slight tremor.
"That's right. Yin-Yang Exchange."
Li Xu nodded and recited from the *Inner Canon of the Yellow Emperor*'s "Discourse on Appraising Febrile Diseases": "If a patient with a febrile disease sweats, but the fever returns, and their pulse is agitated and rapid, not weakening despite the sweat, and they speak deliriously and cannot eat, the illness is named Yin-Yang Exchange..."
"'The fever returns after sweating' means that after perspiring, the fever doesn't just fail to subside, it actually gets higher."
"'Agitated and rapid pulse' means the pulse is racing and erratic, indicating that the righteous qi is nearly depleted while the pathogenic qi is flourishing."
"'Delirious speech' refers to mental confusion and restless agitation."
