At the entrance to the secret passage, you used all the power of Cheng Kun that you had devoured with the Sun Swallowing Divine Art to nourish and open the acupoints within your body.
Ever since breaking through to the Grandmaster Realm, the more acupoints that took shape within your body, the greater the amount of internal energy consumed when nourishing and opening them.
It had even surpassed the speed at which you condensed internal energy.
Now that you had Cheng Kun's power, the speed at which you nourished and opened your acupoints immediately increased.
Unfortunately, Cheng Kun was only at the early Grandmaster Realm, and he had just gone through a fierce battle. Only about half of the power within his body remained.
Thus, in less than fifteen minutes, Cheng Kun collapsed onto the ground like a puddle of mud, every last bit of his power devoured by you.
You had also successfully used his power to nourish and open an acupoint, saving yourself three months of painstaking cultivation.
However, what surprised you was that after so long, Cheng Kun, who had taken your palm strike to the back of his heart, had not died from a ruptured heart.
You immediately calmed the surging internal energy within your body, then bent down to examine him.
You were astonished to discover that Cheng Kun's heart was not in the same position as an ordinary person's. It was located on the right side instead.
Looking at Cheng Kun, who had fallen into a deep coma on the ground, you were about to strike him dead with another palm, but just as you raised your hand, you suddenly stopped.
You had thought of a better way to make use of him.
Half an hour later, you appeared with the unconscious Cheng Kun