A few days ago, Gong Ah mentioned to Hui Jian Yu about two mirrors that were placed in the chamber of forbidden books when he asked about how they connected people far away without journeying. The mirrors were called ''The mirrors of interactionists''.
The first mirror was made out of Rowan Wood, which tends to favor those with the darkest hearts and minds. The handle was made out of Poplar Wood, which in turn was usually preferred for those with a dark heart. However, the combination of this strand of Rowan Wood and Poplar Wood meant the mirror will seek out somebody who tends to make the right choice.
A mirror usually has 1 or 2 cores, but some have 3, this mirror had 2 cores. A core of the mermaid's hair has the ability to calm its owner in dire situations and dragon glass is added to boost the power of the mermaid hair core.