C5046 Persist with Medicine

"You know medicine?" Zheng Siming sized Lu Yu up and down and let out a cold laugh.

At this time, he no longer put on an act and mocked, "medicine is a very cautious thing. Although some people say that they know how to concoct pills, but not even a proper identity. Senior Brother Lu, do you have the identity of being certified by the Elixir Alliance?"

Lu Yu shook his head