The moment he stepped onto the staircase made of Spirit Crystals, Mu Chen felt a warmth under his feet. After a moment of appreciation, Mu Chen said, "Brother Xu, I heard Miss Yu say you're a Fourth-grade Spirit Selector. Could you tell me about the differences between the various Grades?"
Xu Fei nodded. "Of course. To be honest, the distinctions between Spirit Selectors are quite vague. It's not like with Martial Artists or Cauldron Masters, where it's a straightforward test of strength or refining techniques. For a Spirit Selector, it's not just about what you can see, but also about hard-won experience."
Mu Chen asked, puzzled, "Experience?"
