C312 The secret of lingxuan college

After receiving the Obsidian Stone, the group of people immediately headed back towards the Spirit Mountain Academy without stopping.

No one knew what exactly this Obsidian Stone was nor did they know what it was used for, but what was certain was that Ling Xuan was probably in urgent need of it.

If there was a delay, then once this item was lost, no one would be able to bear the responsibility