Although many thoughts flashed through Liu Yu's mind, the exchange gathering continued.
"One flask of purple copper sand in exchange for an earth-attribute demon beast inner core of tier-two middle-grade or above."
"The higher the grade, the better. I can make up any difference with spirit stones."
As soon as one exchange was completed, the next cultivator stood and spoke in a deep voice.
He took a small flask from his Storage Bag and set it on the table, opening the lid for the other cultivators to inspect. Inside were tiny grains of purple sand.
The purple grains brimmed with spiritual energy, each containing rich fire-attribute spiritual energy. They were superb materials for forging fire-attribute top-grade magical artifacts.
There was a considerable amount in the flask, enough to forge two or three top-grade magical artifacts. It would be very useful to many early- and middle-stage Foundation Establishment cultivators, particularly those who practiced Fire Element cultivation methods.
"One tier-two upper-grade Rock Turtle inner core. However, this flask of purple copper sand falls well short of its value. You'll have to add something to your offer, fellow Daoist."
A muscular cultivator with bare arms soon spoke up. He placed an earthy-yellow inner core the size of a goose egg on the table, indicating that he wanted more in exchange.
"Wait. I have a second-tier Earth Armored Rhino inner core here and would also like to trade with you. Why not take a look at mine, fellow Daoist?"
Another cultivator promptly offered a trade, equally tempted by the flask of purple copper sand.
The cultivator who had offered the purple copper sand hesitated, weighing the merits of the two inner cores. In the end, he chose the Rock Turtle Demon Core and took out a sum of spirit stones to make up the