According to the jade slip, the Profound Yin Ghost Mulberry favored environments thick with yin energy and was rather finicky. Death energy was acceptable, but it could not come into contact with Corpse Qi.
That was quite convenient for Wang Daoyuan. With the Gui Water Nether Flame in the Spirit Pearl Space, he did not lack Pure Yin Energy.
That Netherworld Blood Contract he had seen in the Soul Domain had been made from fifth-tier high-grade material.
Moreover, it seemed to have fallen from an even higher grade.
Thus, the adult Netherworld Silkworm would not be of a low grade.
And since the Profound Yin Ghost Mulberry was the Netherworld Silkworm's best food, its grade naturally would not be low either.
With this thing, he should be able to obtain quite a bit of Netherworld Silkworm Silk in the future.
Wang Daoyuan took out the large bundle from the table beside him. It too gave off dense yin energy.
After opening it, he found more than fifty black stones and three black crystals inside. They were Soul Stones and Soul Crystals.
Wang Daoyin was somewhat puzzled. "These are Soul Crystals? In the Northern Abyss Cultivation World, only the Heavenly Secret Tower has Soul Crystals this pure. Where did you get these, nephew?"
"I obtained them from the Soul Race of the ice plains. They are products of the Netherworld.
"If one wants to refine sixth-tier puppets, it is best to use Soul Crystals of such extreme purity."
Wang Shouye knew about the Soul Race, so he did not ask further.
Although Wang Daoyin did not know about the Soul Race, he had already entered the Divine Weapon Pavilion. It was not appropriate for him to pry into the Lineage's confidential matters.
"The Seven Stars Sea is in the midst of