C226 Deliberate rebuttal

Could it be that he had taught others medical skills in the past and told someone else the same thing?

It must be.

"Ning Yu, do you understand what I just told you?"

Ning Yu nodded. "Little Lou! I understand these principles. Do you need to study for a long time before you can treat others? "

Zhan Xiaolou thought about it and said, "This is not a simple matter