Chương 605: Chapter 603 Unbelievable Truth

Chu Yi thought of the wonderful moment he shared with Chu He and couldn't help but lose control of his smile.

Seeing Chu Yi's lips almost tilted at a forty-five-degree angle, the elder and Master Cao exchanged another glance.

Their hesitant expressions took Chu Yi by surprise.

"Could it be... could it be that the last elixir needs a person's heart?"

Chu Yi had once heard a very strange thing from his senior sister, Lin Qingying.

Lin Qingying's master had said, to master a certain cultivation technique, one needed to be of a certain age, and more importantly, the heart of a boy under six years old as the medicinal catalyst.

Thinking of this, Chu Yi involuntarily shuddered.

The elder and Master Cao nodded slightly but quickly explained, "This is only necessary for reaching the highest realm, and the original practice doesn't require such a catalyst."