the energy of the Five Wise Sages

Exploration Stage: Artifact Bank
From: Mr. Jenkins
Description: We are almost there! I've been reading over the Guardian Corps document. I think I know what "light energy" is. An object has been kept in the bank for many years. It is not a talisman or an artifact. I don't even know what it is used for. Would you please search for it with me?
Completed: So you found a preservation container! Do you see the pearly glow? This is pure power, but I have never been able to use one myself. I thought it was a meaningless little thing, but apparently it does not work well without a counterpart talisman.