C4451 Tracing

Ling Xiaoya didn't really understand how Zhang Xingyun's medical skills worked, but she had heard some rumors about him in the past. Furthermore, Zhang Xingyun had helped them cure the poison back then, so it was definitely not bad.

"Treat?!" Zhang Xingyun slightly furrowed her brows, not knowing what she was thinking about. After that, she fixed her gaze on Ling Xiaoya and said, "Elder sister