C51 Her sister

After she finished laughing, she looked solemnly at Pierre, and said with a serious voice: "Mr. Pierre, I hope that you can help me keep this a secret, and not tell anyone, especially my fiance."

"Please don't call me sir all the time. Although I am indeed very old, I don't like it when you call me that."

Pierre frowned as he corrected Su Ningqing's way of calling her Mister