Because the sinister crystal cores' aura fluctuations weren't deliberately suppressed or concealed.
As a result, the moment these cores were taken out of the jade box, their fluctuations filled the entire auction house.
Immediately, countless people's expressions changed as they felt a chill rise in their hearts.
Fortunately, the auction house only let the aura of these sinister crystal cores out for a moment, mainly to showcase their immense energy.
Moments later, they placed them into the spherical cover on the auction stage.
The terrifyingly evil aura vanished, isolated away.
"The next items to be auctioned, as you probably already know, are none other than the rare sinister crystal cores!" Ruxue introduced.
"These cores are produced by entities in the Innate Realm. Besides them, there is also one from the Grandmaster Late Stage! If any of you have the suitable cultivation technique, you mustn't miss out."
Upon hearing this, the auction house was instantly stunned.
