Zhentian Endless Tower, Emperor Bone Mystic Profound Venerable

In the chaotic void, a stretch of Crimson Mist churned, and the falling stars along its path seemed as tiny as dust before it.

Deep within the Crimson Mist, thunder and lightning interwove. This place seemed like the end of the abyss; all kinds of Demon Shadows emerged one after another, and eerie illusions surfaced, dazzling and terrifying.

An incomparably majestic black tower stood deep in the mist. Looking closely, it was made of four-cornered palaces stacked atop one another, and on the eaves of every level crouched evil things radiating terrifying auras. Some resembled demons, some resembled humans, and others had forms too hard to describe, blurred and indistinct.

Inside the black tower was a bright great hall. The floor shone like the Milky Way, and enormous stone pillars carved with mysterious patterns stood in no particular order, like sky-propping columns, unshakable.

A white bird suddenly flew into the great hall. The long feathers at the end of its tail were longer than its body, and behind its head there was the faint glow of seven-colored rosy light. It looked extraordinarily divine, brimming with immortal grace.

Boom!

A terrifying figure descended from the sky, fully ten thousand zhang tall. Its entire body was pitch-black, its shape humanlike, and its long hair drifted ceaselessly—formed from long snakes that were flicking out their tongues. Its eyes were bloodred, glowing with a fierce light, and an overwhelming aura erupted in an instant.

"Roar—"

A deafening roar rang out, shaking heaven and earth. This ten-thousand-zhang-tall evil demon did not seem enormous inside this great hall, but before the white bird, it was like a divine mountain.

The white bird stopped, then transformed with a shake of its body into a figure shining with silver light.

It was Gu An!

Gu An was using