The appearance of the "Beast's Shell" had already hinted to us that the Daylight Civilization was likely not a purely spiritual cultivation system, but rather a mix of Mech King's Psychic Technology and a civilization geared towards forging.
Forging requires flames and temperature, but what flames could compare to the sun that shines upon all realms?
Serena Martin continued, "From this conclusion, it's clear that the Daylight Civilization excels in crafting the Beast's Shell, using it to harness the sun's power and initiate the evolution of life.
As for the Sun Shadow River, it should be a laboratory dumping site for disposing of waste material, which over time has accumulated immense spiritual power, causing an abundance of abnormal creatures to gather.