C313 It is difficult to avoid an arrow with an open spear

When the results of the appraisal were revealed, the manager told Charlene that this thing was an "unknown substance".

He had never seen this kind of material before, and with his knowledge, he really didn't know what it was.

This result made Charlene feel a deep despair. However, Charlene was also very clear that if this thing was "found out" easily, then there would be no more fun