Not stopping because they managed to reach the Grandmaster Realm, both Xuan Hao and Yi Min continued to attentively listen to Gong Cheng. Even if they had already figured out that something was off, it didn't change the fact that listening to Gong Cheng preaching the Dao of Blacksmithing was immensely helpful to both of them. Even after they had broken through to the Elementary Realm in the Dao of Blacksmithing, this didn't change in the slightest and both of them were still progressing rapidly.
Rumble~!
However, a month after Gong Cheng had started preaching the Dao of Blacksmithing to them, a low rumbling sound could be heard throughout the interior of the forge before it started spreading outward to cover the entire Blue Shore Kingdom and beyond it.
"Huh!?"
"This is…"