Yun Xiao had once encountered a Strange Spirit of a Tree Spirit during the Countries Hidden Dragon Conference at Demon Suppressing Mountain, and this Strange Spirit not only lacked complete Spiritual Wisdom but also possessed a low-level Sixth Rank cultivation.
At that time, Yun Xiao used some special methods to kill the Strange Spirit of the Tree Spirit, and he even evolved his own Wood Attribute Ancestor Vein once, making it quite a significant transformation.
However, the Meridian Spirit summoned by Peng Muxin at this moment, even without Spiritual Wisdom, has an extremely terrifying aura. Even Yun Xiao found it slightly inscrutable, pondering if it was a Seventh Rank Advanced or had already broken through to the Eighth Rank.
It seems that to thwart Yun Xiao, the Spirit Fighting Commerce has really invested heavily. Strange Spirits are rare, and those that can be found and have their Spiritual Wisdom erased are even rarer.
