The middle-aged man was surprised for a moment. Noticing his own image being projected above Li Yao's wrist, he could not help but smile. He nodded and said:
"Hello! Yes, I'm Ding Yin."
"Awesome! Professor Ding, my name is Li Yao. I'm a new student of the Grand Desolate War Institution's Refining Department. I am an ardent fan of your books and have collected all four of your books, which I’m currently reading. I feel that your theories are easier to understand than others, and the data is very detailed as well—they are truly rare monographs of theories!"
Li Yao was extremely excited.
Although Master Refiner Ding Yin of Hidden God Valley hadn't refined any shocking masterwork weapons, in the refiners community, he was a theorist that was second to none. He had done in-depth research about refining theories and had written several important books.