In the Seven Stars Sea Cultivation World, peak sixth-order earthly fire was already among the most supreme Heavenly Materials and Earthly Treasures.
An ordinary cultivator would likely rather destroy this secret realm than leave the earthly fire behind.
But in Wang Daoyuan and Zhou Luan's eyes, the earthly fire was nothing much.
They both had their own spirit fires and truly had no shortage of such a thing.
Instead, the many mineral veins within this secret realm were worth far more than a spirit fire they did not urgently need.
Among the fiery red stones beside the earthly fire, some had already become nearly completely transparent. They would likely become true Lava Fire Crystals after another century or so of nurturing.
Even if they were taken out now, they could still be used as genuine Lava Fire Crystals.
Some stones had only just begun to turn red. Without tens of thousands of years of nurturing, they could never become true Lava Fire Crystals.
The many stones here could be said to perfectly display the growth process of Lava Fire Crystals, yet there were no fully formed Lava Fire Crystals.
As the local tyrant here, the Flame Giant Turtle had collected all the mature Lava Fire Crystals.
The old turtle carried the two of them and swam toward the earthly fire.
After swimming less than a hundred zhang, they saw an enormous rock ahead that even the lava had failed to melt.
On the side of the rock facing the earthly fire was an open entrance that looked like a cave abode.
Wang Daoyuan and Zhou Luan walked inside. Rather than a cave abode, this place was more like a turtle's nest.
There was only one empty stone chamber here, without any furnishings whatsoever.
The various artifact refining materials the old