From the conversation Ye Mo overheard, he found out that Saint Ancestor Bloodsaber was actually a grand elder of the Door of Desolation's Inner Peak. She had high status, and her Blood Devil Saber was a Celestial Weapon. She was looking for a sheath to suppress its excessive devilish aura.
To impress the Saint Ancestor Bloodsaber, many organizations of various sizes were trying to find the sheath she required. So the price of the Black Crystal Stone had increased sharply.
"Well, that's quite a surprise." Ye Mo frowned. "Turns out I have bad timing. It won't be easy for me to find any Black Crystal Stones right now."
"What are you looking for, brother?" a crafty looking man approached Ye Mo and smiled at him. He had a very ugly smile. "Let me know and I'll show you the way. I only need some tips for it."
"Are you an employee of the Divine Treasure Guild?" Ye Mo asked.