Of the three original mainland kingdoms,
only the Heaven Dou Empire and the Star Luo Empire shared a direct border with the Sun Moon Continent.
And between the two,
the Star Luo Empire's border with the Sun Moon Continent
was nearly ten times as long as the Heaven Dou Empire's.
On top of that, the Mingdou Mountain Range was rich in mineral resources, including no shortage of rare Soul Tool ores, and both empires wanted to claim it for themselves.
As the two sides struggled for control,
the Star Luo Empire naturally bore the heaviest and most direct border-defense burden of the three kingdoms.
Compared to Heaven Dou City, which had towering mountains and rushing rivers as natural barriers, the route from Star Luo City to the border between the two continents
also had natural barriers,
but they were relatively weak.
There was no mountain range on a scale greater than the Mingdou Mountain Range.
The unusual imperial succession, the vast border, the overwhelmingly powerful enemy, and the weak natural defenses
had ultimately led the Star Luo Empire to build, on the plains,
a breathtaking marvel.
Of course,
it was not just this wall stretching for hundreds of miles, but also the defensive installations deployed throughout the city.
Their flight gradually descended.
The endless expanse of Black Rock, seeming to merge with the horizon, grew rapidly larger before their eyes,
gradually coming into focus.
It was no mountain range, but part of the Star Luo Empire's monstrous defensive system, built over thousands of years by successive generations.
Even before they had arrived,
its scale was enough to leave everyone in awe.
As they drew closer to the city wall,
Lu Ran looked down.
The scene across the vast plain grew more vivid. The faint lines in the distance sharpened into