The natives of the Primordial World were not skilled in formations.
That was because Destined Divine Weapons were simply too overpowered.
Curses, witchcraft, formations, and the like were utterly insignificant before Destined Divine Weapons.
Rather than studying such unorthodox tricks, it was better to temper one's Destined Divine Weapon properly.
Tens of thousands of years ago, someone had developed a City Protection Array, claiming it could withstand assaults by ferocious beasts.
This had indeed piqued many people's interest.
But after testing it, they discovered that the City Protection Array's Defense Power was truly mediocre. It could not protect a city at all; even a slightly stronger ferocious beast could shatter it with a single slap.
Over time, the City Protection Array was gradually forgotten, and no one paid it any attention.
It was only after Di Xin emerged that formations once again entered the public eye.
Di Xin was widely read and exceptionally experienced.
In just two and a half days, he reconstructed the core of the City Protection Array, increasing its Defense Power several dozenfold.
Over the following three months, Di Xin devoted himself to studying formations and upgraded the City Protection Array more than ten times. Not only did he improve its defensive capabilities, but he also added a gravity system, giving it a certain degree of offensive power.
This was the first-generation Di Xin Gravity Array.
After Di Xin ascended the throne and became the 299th Emperor, he made the method for setting up the Di Xin Gravity Array public, allowing everyone to learn it free of charge.
All cities could deploy this array to fend off ferocious beasts, including the cities of the Bright Moon Empire and the Weideka Empire.
At the time, some ministers of the Fallen Sun Empire secretly complained, believing that the Emperor