C831 I Want to be Strong

"Humph, as your teacher, I only want to test you. Since this Nine Nether Dragon Root has the same medicinal theory as the Emperor Blood Vine and Green Mountain Bamboo, then why can't I use it to refine Essence Returning Pill!?"

Guu Feng saw Lai Yao's pretentious appearance and immediately found it funny. At the same time, he didn't forget to tease her, "Yes, teacher is right!"

Then he explained