The Emberfire God Clan had many secret regions. Areas with barriers like Black Sky Fortress had previously been surrounded by the Primal Blade Bug Lord's subordinates, making them inaccessible.
Purple Sun God King had always instructed Ku Ai Bansheng and the Sword Spirit King to lure and kill broodmothers along the passage leading to one of those secret realms.
Now that Ku Ai Bansheng had killed the three thousand broodmothers and over a hundred thousand war beasts along this route, a relatively safe passage had been revealed.
"This secret realm is called Calamity Fortress. It is a special region formed through a series of coincidences when this star territory of the Original God Race first came into being."
"It contains violent fire energy. Even Saint-tier experts must proceed cautiously, especially around the special fissures within Calamity Fortress. Every so often, Origin Fire Seeds erupt from them." Purple Sun God King explained to Lu Yang as they flew.
Lu Yang asked curiously, "Aren't Origin Fire Seeds limited to however many existed at the beginning of creation?"
Purple Sun God King shook his head. "In theory, yes. But there are always special regions, like Chaos Alloy Mountain. For certain reasons, they became wrapped in Elemental Waste Stone, and their true forms can only be seen after excavation."
"Calamity Fortress is one such place, which is why it is so dangerous. The Emberfire God Clan named it Calamity Fortress because many high-tier God King experts died after entering it."
"My ancestor entered it before, so I inherited this portion of his memories. The Emberfire God Clan valued me so highly back then for this very reason. After I came of age, I led their high-tier God Kings into that region many times and obtained a great number of Origin Fire Seeds for them."