```
Oh? Feng Jun noticed this anomaly, paused for a moment, and carefully recalled the flow of spiritual energy and the method of forming hand-seals.
After a while, he cast the Falling Thunder Technique four times in a row.
On the fourth Falling Thunder Technique, the situation occurred again, with the spiritual energy decreasing by another twenty percent. A boulder the size of a door panel in the distance burst open with a bang.
"Congratulations, senior!" Yu Changqing exclaimed loudly, "The Spirit Art has emerged! Remember to exhaust all spiritual energy."
So that's how one exhausts all spiritual energy, Feng Jun finally understood: I was wondering why it took over six hundred casts of the Falling Thunder Technique to regain spiritual energy each time; it did seem a bit cumbersome.
