Familiar

Everything happened too suddenly. When the few of them recovered their senses, they were already all trapped inside the Xuan formation.

The entire Xuan formation was semi-circular and trapped the few of them in the center. It shone with a dark-blue, cold icy light, which sent chills down one's spine.

"W-what is this?" an elder couldn't help but mutter softly and rapidly surveyed their surroundings. "Someone was hiding here to ambush?! Why did we not detect it at all beforehand?"

"This Xuan formation should've been set up here in advance," said Elder Hua Feng in a low voice. "We only activated it automatically after we walked over."

Any crafting and creation of Xuan formations required time and energy. The higher the Xuan formation's level, the more it was so.

The Xuan formation that trapped them here had appeared very quickly, so it had clearly been prepared in advance.

"Who would set up such a trap here?"