C671 An Opportunity That Could Only be Encountered by Chance

Su Wen had just finished speaking when one of the students raised his hand high in the air. Su Wen smiled and asked him to stand up.

"Mr. Su, let's not talk about us. Even the junior high students who have read a few fantasy novels know about the Pill Refining Technique." The student frowned slightly, and his tone was not friendly. He probably thought that Su Wen was using them as a joke