Yang Fan's words shocked every disciple below, but they were also filled with confusion. Just as Yang Fan had said, during the cultivation process, everyone only discovered the benefits of the Nine Heavens Heart Refining Technique, yet hadn't found any problems.
Such thoughts were reflected in their eyes, almost overflowing with emotion. Yang Fan naturally could see what they were thinking and smiled, saying:
"Next, I will prove the problem with this mental method. However, it won't be me who helps everyone test it, but my master, Elder Du Tong!"
After Yang Fan finished speaking, he looked at his master and said:
"Master, I'm going to trouble you next."
Du Tong smiled bitterly and said:
"It's no bother, but how should we test this drug?"
"It's not complicated, but it requires someone above the True Essence Realm to perform, and I can't do it yet." Yang Fan paused, then continued:
