Chapter 521: Advancing to Dou Ling

Surprise flashed across Yao Lao’s eyes within the mountain cave as he eyed the medicinal liquid that swiftly swirled within the wooden basin. With his ability, he could naturally sense the suction force that was surging explosively out from Xiao Yan’s body. He immediately muttered softly, “This little fellow wants to break through the Da Dou Shi class in one go? Borrowing this formidable force, it appears that he has quite a good opportunity. However, the energy he needs is an extremely large amount…”

The medicinal liquid swiftly spiraled within the wooden basin. Waves of incomparably pure energy seeped out from the medicinal liquid. Finally, it poured into Xiao Yan’s body during its training state. As this pure energy flowed until it was gone, the color of the originally multicolored medicinal liquid swiftly became pale. According to this speed, it was likely that not much time would be needed before the enormous energy within the medicinal liquid was completely absorbed by Xiao Yan.

On top of absorbing the energy within the medicinal liquid, the overly powerful suction force also forcefully pulled in and absorbed the surrounding...