C93 You Don't Have to Learn to Know

"No, is there a need to learn something so simple?" Ye Chen asked.

Is it simple? Wei Yan didn't have the face to ask, he really couldn't understand why compared to Ye Chen, he was just like an idiot, but he was clearly the main doctor here?

When Ye Chen started to sew it up again, Wei Yan saw that his familiar technique was already numb to it. He did not ask Ye Chen why he knew how to do it