C41 How do you know

Looking at the Madam's shocked expression, the nobility and elegance that was disguised instantly collapsed, "Lin Yan, how did you know?" Her thoughts were thrown into disarray, and all her words revealed their flaws. After she finished speaking, she realized her mistake and the gentleness in her eyes disappeared. She glared at Lin Yan.

Madam, you yourself said that you know Jiang Muhua