C158 Someone Was Looking for Trouble

"Oh? This explanation is quite novel. Which book is it? Show it to me. " Cang Xuande raised his eyebrows as if he was quite curious about this theory.

Lee Yifann took out a medical book that was not very thick from his pocket. "It's this one. The description on page 37, I drew it out with a brush."

Cang Xuande took the medical book and looked at the title of the book on the cover