After leaving the City of Slaughter, Gu Yi did not choose to return to Heaven Dou City. Instead, he continued north.
In less than half a day, Gu Yi and the other two entered the Ice-Sealed Forest at the northern edge of the Heaven Dou Empire.
The surroundings had become a world of ice and snow, blanketed in gleaming white frost as far as the eye could see.
This place was less than five hundred li from the Extreme North. At Gu Yi's speed, he could reach the Extreme North in no more than an hour or two.
Come to think of it, Gu Yi had passed through the Ice-Sealed Forest and ventured deep into the Extreme North a year ago.
That experience had allowed Gu Yi to successfully hunt his fourth soul ring and obtain the soul skill, 'Blood Burst.'
The reason Gu Yi had come to the northern edge of the Heaven Dou Empire again was naturally not to hunt soul beasts for soul rings.
Neither he nor Qing Lin had reached the level at which they could absorb another soul ring.
Gu Yi had come here for a top-tier Heavenly Material, Earthly Treasure known as 'Myriad Year Profound Ice Marrow'!!
The quality of Myriad Year Profound Ice Marrow was not much inferior to the Immortal Herbs of the Ice and Fire Yin Yang Well, nor to the Gold of Life controlled by the Silver Dragon King beneath the Star Dou Great Forest.
Throughout the countless years of Douluo Star's history, only two soul beasts with a cultivation of one million years had ever been born.
One was the Deep Sea Demonic Whale King in the depths of the ocean. He was immensely powerful, no weaker than a Rank 99 Limit Douluo.
The other was the 'Sky Dream