Heavenly Demon Vow

Zhang Tie floated in the center of the main hall, shrouded in dim light. Only a few ever-burning lamps in the distance flickered with ghostly blue flames, stretching his shadow long across the cold, mottled floor.

He formed a hand seal with one hand, faint bloodlight flowing around his fingertips as he muttered an incantation.

As the incantation gradually took shape, a blood-red halo condensed around him. It coiled and revolved like a living thing, radiating a palpitating energy fluctuation.

The next instant, the blood-red halo abruptly split apart, transforming into five incomparably sharp crescent-shaped blood blades that shot through the air.

They were not physical objects, yet they carried an edge capable of tearing through everything as they simultaneously slashed toward the five enormous white stone pillars in the underground palace.

The instant the blood blades touched the pillars, there was neither an earthshaking crash nor a scene of flying rubble. Instead, like droplets merging into the sea, they silently sank into the pillars and vanished.

Three breaths later, a sudden change occurred.

The five stone pillars seemed to have been infused with life, gradually glowing blood-red from the inside out. Their originally pale stone surfaces became as glaring as if soaked in fresh blood. Immediately afterward, blood-red color began spreading across the floor of the entire underground palace, expanding in a web-like pattern like veins and enveloping the whole space in an eerie, oppressive crimson glow.

After roughly ten breaths, countless intricate and precise blood-red spirit patterns emerged from the five stone pillars and the floor, intertwining to form a massive formation.

At the center of the formation, a blood-red door of light slowly condensed into being. It hovered in the air, only several feet away from Zhang Tie. Ripples of energy undulated across its surface, while its