Northern Plains, Lang Ya Blessed Land.
Inside the type A Gu Refinement Hall, the Gu refinement that had lasted several months had reached its most critical moment.
Lang Ya Earth Spirit personally stood at the edge of a refining path super Gu formation, his eyes fixed tightly on the blazing fire within it.
The flames were ice-blue, not hot in the slightest; instead, they were bitterly cold.
Even a super Gu formation found it difficult to completely isolate the might of these violently burning ice flames.
Standing beside the Gu formation, Lang Ya Earth Spirit's brows and hair had been coated in a thin layer of dark-blue frost.
Yet he paid it no heed, focusing all his attention on the flames.
More precisely, on the mysterious ice at the heart of the flames.
The mysterious ice constantly melted, then constantly formed anew. The original mysterious ice had sharp, distinct edges, but under Lang Ya Earth Spirit's personal refinement, its edges had gradually been ground smooth, acquiring a hint of roundness.
"Five strands of Fan Men Feng," Lang Ya Earth Spirit suddenly said.
The one assisting him was Hairy Folk Gu Immortal Mao Liu. Hearing this, he immediately acted and used a special method to extract five strands of Fan Men Feng from the immortal material stockpile.
This Fan Men Feng was a Rank 7 Immortal Material.
It was extremely peculiar.
It did not grow in deep mountains or ancient forests, nor in vast marshes or open skies, but upon the doors of mortal households.
Whenever such immortal material appeared, the mortal's door would no longer be able to close, only opening and shutting continuously.
This strange phenomenon had drawn Gu Masters' attention long ago, which in turn prompted Gu Immortals to collect it.
Yet at the beginning, Gu Immortals could