Spirit Radiance Fruit and Myriad Spirit Nectar were two precious substances that could accelerate the maturation of Silver Sheath Worms and Five Elements Beasts. With Qin Fengming's knowledge, he had never even heard of these two substances.
Brown Soul Bamboo, which could mature Black Nether Ants, did exist in the Ghost Realm. Although it was a precious spirit herb, it was not particularly rare. It was just that it grew in places with dense yin energy and abundant demonic beasts.
To Ghost Marshal cultivators, Brown Soul Bamboo was considered somewhat useful for cultivation. As an alchemy ingredient, however, it was only used as an auxiliary material. It had another function as well: it could slightly temper the soul.
Brown Soul Bamboo contained a kind of soul-force toxin. This toxin was extraordinarily sinister and could numb and erode the soul. If one used the appropriate secret art, it could greatly strengthen a cultivator's soul. However, this strengthening was not limitless. Once enough of the toxin had accumulated within the body, it would no longer have any effect.
Given the strength of Qin Fengming's soul, he naturally had no need to temper it with Brown Soul Bamboo.
He had seen quite a lot of Brown Soul Bamboo before, but had never thought of collecting it. Now that he wanted to gather some, it was not difficult. Each leaf of Brown Soul Bamboo over a hundred years old cost only one or two hundred yin stones, while mature Brown Soul Bamboo stalk sections could be bought for one or two thousand yin stones.
However, Myriad Spirits' Insights stated that this Brown Soul Bamboo could only mature Black Nether Ants to the half-insect stage. It did not mention anything about allowing them to continue growing.
Half-insect-stage Black Nether Ants were already something Qin Fengming