Diagnosis

Canon seemed a little intrigued after listening to Ning. 

"While your words have a lot of confidence to them, young man. I'm afraid my old self isn't able to find out if you are truthful or not. What if you harm my son more than you will heal him?" Canon asked. 

The audience nodded when they heard him speak and looked towards Ning. Ning thought for a moment and said, "How about this then. I won't treat your son." 

Canon frowned a little. "What will you do then?" he asked. 

"I will instead just diagnose him. I will check him and tell you what the problem is, as well as what the solution to the problem is. Aside from that, I will use no medicine or equipment on your son. That should be enough to not have you worry about me harming your son, right?" Ning asked. 

Canon thought for a moment and asked, "What is your name, son?" 

"My name is Ning," he said. He didn't give a family name as only Nobles were allowed to have those.