Chu Qinghuang and Elder Jiang went through the book from cover to cover again, yet the two of them still could not find the final component of the Wangshi poison. At this, even Elder Jiang wore a puzzled expression on his face. There were five realms in total; both he and Chu Qinghuang were well-versed in the medicinal herbs of the Divine Realm, and since Chu Qinghuang came from the Human Realm, she was more than familiar with its medicinal plants and poisonous weeds. Now that the ingredient could not be found even among the herbs of the Demon Realm, could it be that this remaining substance came from the Demon Realm or the Underworld? (Note: The source text mentions Demon Realm twice, implying a distinction between regular demon herbs and forbidden ones, but here we follow the flow).
Frowning in perplexity, Chu Qinghuang asked, "Master, you don't suppose that final ingredient could be from the Demon Realm or the Underworld, do you?"
After pondering for a moment, Elder Jiang shook his head. "Unlikely. The Demon Realm and the Underworld have always kept their boundaries tightly sealed and have no dealings with the outside world. Furthermore, the Demon Realm and the Demon Realm are constantly at odds; people from the Demon Realm shouldn't be so audacious as to enter the Demon Realm. It must be that there is somewhere we haven't paid attention to. Let's keep looking."
Chapter 675