Feng Jiu glanced at them and said with a faint smile. "Pour me a cup of tea, I'll tell you."
When they heard that, their faces flushed with embarrassment. They realized that their question was out of line. Generally speaking, the physician wouldn't let others help him during the treatment, unless they were his apprentices or something. Only then would they have a chance to see him start the treatment.
Even they wouldn't give anyone the opportunity to watch when they're treating patients or refining pills. However, it would be different if the person was one of their disciples.
Just now, while the two of them were giving assistance and watching, the young man in red did not open his mouth to stop their actions or kept them away. This time, he told them to pour him a cup of tea. In terms of age, they were elders, but in terms of medical skills, he could also be their equal.
If by pouring him a cup of tea, their doubts would be solved, it's not a loss.
