"You're right. Spirit Coins are also a kind of energy source. This machine is powered by spiritual energy, and each time it starts up, it retains some Spirit Essence as a reserve."
Nick spoke gently. "Transcendentalists can draw spiritual energy from Spirit Coins to accelerate the growth of their abilities. Warlocks, priests, and Spirit Controllers all measure a person's wealth by how many Spirit Coins they own. Transcendentalists who follow the path of the Knight also need to use Spirit Coins to draw spiritual energy once they reach the rank of a Middle Knight. Take you, for example. Once your Breathing Technique advances and you become a Flame Warrior, Spirit Coins will come in handy."
Kraun asked the question he cared about most. "How do Warlocks, priests, and Spirit Controllers use Spirit Coins?"
"Go back and read the books. They explain everything," Father Nick said with a smile. "Progressing too quickly has its drawbacks. Your knowledge is far behind."
"Let me tell you some common knowledge that isn't in the books, about Spirit Coins. That way, you won't get cheated when you trade."
"The lowest-quality Spirit Coins still contain a lot of residual emotions, which are easy to spot. Their texture is grayish, with discolored spots inside, and you can faintly make out the images of living creatures. Those are the worst quality. In the past, one such Spirit Coin could only be exchanged for a little over eighty Gold Shields."
Kraun pulled a Spirit Coin from his inner pocket and asked, "Is it supposed to look like this?"
Father Nick glanced at the gray coin in his hand and nodded. "Yes, exactly like that. Where did you get it? Did someone cheat you in a trade?"
"I won it in a bet. Marshall told me a Spirit Coin could