"Hmm, I didn't have many years of education," Wei Ruo replied, "I'm not cut out for studying, otherwise, I would have already passed the imperial examination."
"But Young Master Xu has such a high level of medical skill."
"I can recognize the names of medicines - aside from that, my master personally taught me everything," Wei Ruo answered.
The implication was that I don't understand medical texts, I can only write prescriptions, recognize a few common characters.
"As such, I will have to act as your scribe." Fan Chengxu didn't see it as a problem. Everyone has their strengths and weaknesses. Xu Heyou already has many strengths; having these weaknesses doesn't matter.
If Xu really knows everything, he would find it too wondrous.
So Wei Ruo began to dictate, and Fan Chengxu began to write.