After a moment, a secret book appeared in Liu Hao's hands.

This secret book is exactly the 'Yin and Yang Combination of Spirits' that Baguio gave to Luo Yu before.

"really!"

Liu Hao smiled coldly and said, "I knew that with that bitch's character, you would definitely make this matter irreversible."

The 'Yin Yang He Ling Powder' back then was refined by him.

And he also found the 'Yin Yang Combined Spirit Art'.

Originally, these two things were matching.

On the Demon Sect side, these two things are one of the best ways to refine furnaces and slaves.

The difference is that the Demon Sect doesn't know how to practice the 'Yin Yang He Ling Powder'.

They only know to replace it with something similar to 'Yin Yang He Ling San'.

The effect will naturally be greatly reduced.

The success rate is naturally much lower.
Chapter completed!