" It's a powerful High Grade Sect in the Immortal World. If we go, by comparison, the people we met previously should be from a middle grade sect. You can say that the Saint Formation Sect is the one that owns every shop here," Long Chen explained.
"But didn't you say that High Grade Sects weren't interested in Ghost Town?" Snake Monarch inquired.
"They aren't interested in that. That's true. But they are certainly interested in money as many items to carve formation and to practice cost money. That's why a few students do this every time. Think of it as a tradition."
"In any case, if they don't do it, the mid-grade sects will go directly to their sects to ask for these things. The Formation Sect Elders might even give away things for free. Or even if they take money to give these items, the money might not go to the students. So the students set up this system," Long Chen explained.