Upon arriving at the immortal cave and sharing a cup of spirit tea, Realized Master Lei brought up the problem that had been troubling him.
"Senior, it's like this: as an alchemist, I've always been fascinated by heaven and earth spiritual fires. I've heard that using them for alchemy yields twice the result with half the effort. During an auction held by Yuhua Palace in the State of Wei, I once won a jade slip that contained a very detailed description of heaven and earth spiritual fires. One particular phenomenon mentioned in it completely baffled me, and though it has troubled me for quite some time, I've never been able to find a solution. Therefore, once the beast tide ended, I rushed directly to the Jidan Sect hoping to get to the bottom of it. Unfortunately, your honored master was away again, leaving me no choice but to seek answers in the Scripture Pavilion."
Xu Feng stated the problem he had encountered, though he held back the truth. Given the gravity of the matter, he could only resort to beating around the bush.
Chapter 597