```
The night was thick, and all was silent.
The entire Yu State City had fallen into tranquility.
Yet, the Cao Family residence in the southern part of the city was ablaze with lights, and the vast courtyard and corridors were adorned with lanterns, as bright as day.
Walking side by side along the corridor were Guo Qing and Bai Qiushui.
"Who would have thought that young doctor actually had some skills?"
Guo Qing wiped the sweat from his forehead, "He really did manage to expel the yin energy from the young lady's body."
Bai Qiushui nodded slightly, his complexion calm as water, "Guo brother, the old madam was summoned away by the butler just now. Do you know why?"
"Why?"
Guo Qing's eyebrows rose.
Although he didn't know what had happened, the look on Bai Qiushui's face indicated it was no trivial matter.
"It's about that Ghost Swordsman from the Demon Sect."
