Land.
The skies, the waters, and every direction to the east, south, west, and north had been sealed off. But there was still one route Annihilation Holy King would never have considered, one that could not be blocked: land.
There was a stretch of connected land between North Origin Holy King's Origin Demon Sacrifice Ground and the castle Annihilation Holy King had built—Silverlight Castle.
Origin Ink Sky flew to the edge of the Origin Demon Sacrifice Continent, evading the North Origin Holy King Family's surveillance. Once they confirmed there was no danger nearby, Third Earth Emperor activated a secret technique and led Lu Yang and the Three Sisters into the earth.
"Back then, First War Emperor shattered the Origin Source World, but the land and sky could not stabilize and would often fuse back together."
"To solve that problem, the Element Lords granted me a secret technique that allowed me to merge with the land of the Origin Source World. I used my divine power to stabilize the entire continent. Therefore, I am the origin land, and the origin land is me."
Third Earth Emperor could actually transform Lu Yang and the Three Sisters into bodies identical to the land of the Origin Source World, allowing them to race through the soil.
The ground of the Origin Source World was incredibly hard, made of soil and stone tough enough to withstand Holy King Tier experts running back and forth and all kinds of secret technique attacks. Yet Lu Yang and the Three Sisters moved through it without the slightest resistance, even merging into rocks when they encountered them.
Twelve Flame Souls teased, "How many years has it been since you last used this move?"
Third Earth Emperor said gloomily, "I'm a Great Emperor, after all. What kind of Great Emperor