Ling Feng pondered for a moment, then took out a crimson stone from his Space Spirit Ring and gently placed it on the counter, smiling faintly, "Senior, I would like to exchange this item for the Yin Yang Stone. What do you think?"
The old man's eyelids twitched slightly. He picked up the crimson stone and examined it for a moment, suddenly exclaiming, "This... could it be the Refining Sky Divine Stone?"
Ling Feng nodded slightly, "From you, senior, I can faintly detect a medicinal scent. Although it's very subtle, the grade is quite high. If I'm not mistaken, you must be an Alchemist. The value of the Refining Sky Divine Stone, compared to the Yin Yang Stone, might be slightly lower, but for an Alchemist, it's entirely different. Would you be willing to exchange your Yin Yang Stone for my Refining Sky Divine Stone?"
"Hahaha! Exchange! Of course, an exchange!"
