"Hm?"
Hearing this, Luo Hong was first startled, then immediately changed his fist into a palm. It rapidly expanded, and with one grab, he suppressed the toad yin beast in midair.
"This yin beast can be used to cultivate the Nether Spirit God-Reversing Technique? Are you sure?"
Luo Hong asked as if speaking to himself.
The next moment, a dark shadow appeared from the black mist. After a slight distortion, it transformed into a human figure that looked exactly like Luo Hong.
It turned out that the one who had sent the voice transmission earlier was Luo Hong's Ghost Dao Incarnation!
"I have yet to try it, so I naturally cannot be completely certain. But I am sixty to seventy percent confident."
The Ghost Dao Incarnation did not dare make any absolute claims.
"Tell me how you intend to do it."
After glancing once more at the toad yin beast, Luo Hong asked.
"Main body, you should have noticed as well. Like those Outer Realm Sky Demons, this yin beast lacks sentience but possesses powerful spiritual sense.
"The difference is that although yin beasts also have no physical body, they possess magic power—namely, the dense and pure yin qi within them.
"In other words, as long as all this yin qi is extracted, what remains of this beast can be used to cultivate the Nether Spirit God-Reversing Technique!"
The Ghost King immediately replied.
"You want to use this yin qi for cultivation?"
Luo Hong immediately realized that the Ghost King was not doing this entirely for his sake.
"Correct. The yin qi of these yin beasts is extraordinarily pure. To me, it is equivalent to Immortal Yuan Stones."
The Ghost King promptly admitted it.
"Hm. Your method is indeed theoretically feasible, and now that you have become a ghost immortal,