Following the old tortoise's account, Li Su headed straight for the place where it had discovered the Ten-Thousand-Year Unmelting Ice.
That place had been discovered by chance. Back then, the disciple who had fled there in blind panic found a narrow crack at the left forelimb of the tortoise-shell-shaped mountain. He had wandered inside for nearly half a year before stumbling upon it.
The interior was peculiar—immense, with countless narrow paths winding and stretching on, seemingly without end. Put simply, he had once followed a single path for nearly two months without reaching its end.
One had to know that he had been in the Golden Core stage. Even conserving his strength, he could still travel over three hundred kilometers an hour.
Two months—sixty days, 1,440 hours, over four hundred thousand kilometers. What kind of distance was that?
His discovery of the Unmelting Ice had been pure coincidence. The place could only be described as a super-sized maze.
It could be said that if not for his astonishing memory—if he had not remembered every path he had passed even while running about at random—then even after finding the Ten-Thousand-Year Unmelting Ice, he likely would have struggled to get back out.
As for why he had not simply stayed inside, refined that piece of Ten-Thousand-Year Unmelting Ice, and emerged only after reaching the Great Luo realm—
First, the Ten-Thousand-Year Unmelting Ice was primarily composed of Dao. The cold within it was terrifying, and a Golden Core cultivator could scarcely endure it.
Second, its level was simply too high. Even when that Golden Core cultivator returned after reaching the Celestial Immortal realm, he still could not make effective use of it.
To refine this Ten-Thousand-Year Unmelting Ice, one would probably need to reach the Profound Immortal level.
And clearly, not a single