Situ Mingyue returned to her small courtyard and acknowledged the Profound Yin Jade Plate and the Xuanming Robe as her own.

The reason spirit-grade tools are called such is because they possess "spirit."

Besides gaining the acknowledgment of the tool spirit for a smooth ownership, one could also forcibly erase the tool spirit with powerful cultivation and nurture a new one.

However, this would inevitably downgrade the spirit-grade tool to a treasure-grade tool, greatly reducing its power. Hence, unless absolutely necessary, no one would use this method.