After planting the Dark Night Flower, Zhao Fu came to where the Yin Soldiers were converted and decided to make this also the place or nurturing Yin Soul Beasts. This was because the Underworld was not very safe and it was easy to be discovered and destroyed; if that happened, all of his efforts would be for nothing.

Zhao Fu planned to expand this area and gather more Yin Qi. As for how he would do this, he had already thought of a plan.

Back in the historical remnant, Zhao Fu had killed a rock dragon and obtained a Ghost Bloodline Pearl. This pearl could gather ghostly qi and Yin Qi, and it could create a Yin Vein.

A Yin Vein's power was quite great; the Devil Horn Empire was only so powerful because of its Devil Vein, and even though this Yin Vein could not compare to it, it would still have great effects.

Zhao Fu came to the center of the area and squatted down, pressing the Ghost Bloodline Pearl into the ground. The pearl gave off an intense light and a formless power spread ou