The Deep Diving Ship had continued onward through the Abyss Domain for a total of three and a half days. At first glance, that sounded like a terrible result—just three and a half days, not even as long as some powerful Empire Commanders could sustain combat in the Abyss Domain. But considering something else, no one would find it surprising: it had headed all the way toward the depths where Abyss contamination was most severe. The distance it traveled had long surpassed the stability limit of anything created by the material world. With every step forward, the pressure it had to endure increased severalfold. During the first day, the Deep Diving Ship might still have been passing through the area Sandora had entered back then. After that, it entered an entirely uncharted death zone.
The Deep Diving Ship's design strength against Abyss contamination far surpassed that of any starship we had before. While cruising near the Abyss Gate, it could practically operate forever. Only after continually pushing deeper into dangerous territory and reaching its limit would it collapse. Based on its speed, the point where it failed had already crossed the Abyss Shallow Zone and very likely touched the "Unfamiliar Frontier."
The Abyss Shallow Zone was Tawell's term. She had roughly divided the known Abyss environment into layers, with the Abyss Gate as the entrance. The area near the Abyss Gate was the Abyss Shallow Zone, where the contamination was dense but not fatal. Unstable passages existed between Abyssal forces that could be safely traversed—those were the gaps we had observed when the mist surged. These unstable passages greatly reduced the danger of the Abyss Shallow Zone. As long as one could accurately locate those gaps, even ordinary mid-level Xiling Apostles could fight in an Abyss environment. There would be