C85 Refining!

"Spirit Concentrating Powder," the middle-aged man known as Jiang Dong said with reverence. Zeng Yun nodded in acknowledgment, "Yes, I recognize you. You've attempted the assessment over ten times, each time falling just short of success. Put in your best effort this time."

"Thank you, Vice Tower Master," Jiang Dong replied, his eyes reflecting his gratitude