C743 A Thief

"By pouring so many ingredients into the same gourd, you'll still be able to identify them. I think these ingredients are about the same."

Zhang Cheng couldn't help but ask on the side.

Hearing his words, Old Taoist Lord turned around and looked at him. He laughed loudly: "We medicine cultivators don't only rely on these looks to determine what kind of medicine it is, it's mainly based on smell