"Different regions use similar ingredients for making incense, with only slight variations in the process and scent. However, due to different regional outputs, there are often subtle differences, with some local materials added. If you know where it's produced, I might be able to make a close guess," the old man slowly explained.

Yuan Ming first nodded, but then shook his head.

"Then I'm afraid I can't help," the old man said regretfully, shaking his head.

"If I were to break off a small piece, scrape it into powder, or light it, could you help me identify the materials inside?" Yuan Ming suddenly had an idea and asked.