C446 Are You Ready to Withstand My Fury?

After a moment, Lin Fei turned his gaze to the visibly distressed Mrs. Xu and inquired, "How long have you been administering such a substance to Mr. Xi?"

"Uh..."

Mrs. Xu appeared fearful, hesitant to respond to the question. Yet, under Lin Fei's piercing stare, she found herself compelled to speak, her voice quivering, "It's been..