"I never imagined these keys held such a secret," Huo Lian said with a sigh.
Only Huang Xiao and Huo Lian were in the secret chamber.
"Unfortunately, we don't know what that secret is," Huang Xiao said.
"Be content with what we have." Huo Lian smiled. "Even in the Immortal Spirit Domain, there are probably only a handful who know the broad outlines of this secret. We may not know, but we have a Bronze Key. That already puts us far ahead of countless others."
"That's true." Huang Xiao smiled as well. "I just never expected there to be a unique Iron Key too. Unfortunately, we wouldn't even know where to begin looking for it."
"You actually want to look for this Iron Key?" Huo Lian asked.
"I was only thinking about it," Huang Xiao hurriedly said. "Something like that isn't going to turn up just because we want to find it. Still, Ren Dongju's final reminder was right. If we discover an Iron Key like that in the future, we really will need to pay special attention to it."
"Not just an Iron Key," Huo Lian reminded him.
"Patriarch, do you think that one unique key could be made of another material?" A thought stirred in Huang Xiao's mind as he asked.
"Why couldn't it?" Huo Lian asked in return.
Huang Xiao pondered for a moment. "What material could it be?"
"Until the very end, probably no one will know." Huo Lian smiled. "Of course, an iron key is still the most likely."
"Patriarch, now that you've reminded me, I actually feel it's not very likely that this key is made of iron," Huang Xiao said.
"That's what you think?"
"Judging by the gold, silver, and bronze keys, logically, an iron key would make sense. But Longevity Daoist already