High-Level Earth Grade Technique!

Feng Chen remained composed, though an air of quiet satisfaction lingered around him as he observed the frantic bidding for the monster cores he had placed in the auction. 

The sixth-grade monster cores were treasures in their own right, but what excited him even more was the anticipation of what was to come.

After all, among all the items he had auctioned, Monster Cores were the least valuable.

As the bidding for the final monster core concluded, the auctioneer took a moment to gather himself before stepping back to center stage, his voice rising with renewed vigor.

"Esteemed guests, we've had the honor of presenting some truly remarkable items thus far, but now we bring to you something that transcends ordinary treasure—a High-Level Earth-Grade Martial Art Technique!"

A hush fell over the crowd as the auctioneer gestured toward a beautifully crafted box, which was carried forward by two attendants.