Chapter 761: Chapter 540: The Ultimate Art Revealed_1

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Along with Gu Chen's seclusion this time, three days and three nights quickly passed.

On this day, within the secret chamber of Jing Tian Department's headquarters, Gu Chen, who had been sitting still for three days and nights without any movement, suddenly opened his eyes and took a long breath.

"It's indeed difficult to deduce an ancient technique," Gu Chen sighed.

At this moment, the spirit crystals that were piled up like a mountain in front of him had all disappeared, absorbed by Gu Chen and transformed into power points on the panel. The number was so astronomical that it had made even Gu Chen himself blink in surprise initially, and he was still feeling the aftereffects.

It was really an astronomical number, and if it had been up to Gu Chen to slay demons and spirits himself, he wouldn't know how long it would take.

Of course, that's assuming there were that many demons and spirits for him to hunt.