C318 Divine Genius Sect

"Brat, what have you done?"

Elder Nan said in fear.

Zhang Nan laughed and said, "Guess."

"Only the hidden sects would have the secret method to increase one's cultivation. How did you know? Aren't you a rogue cultivator?"

Elder Nan asked in fear.

Just as Zhang Nan was about to continue, a voice sounded again.

"You better hurry up. My spiritual energy can't be maintained for too long