No one needed to tell Ning Cheng; he was already thinking of leaving as quickly as possible.
Just as Ning Cheng had retreated several steps, a buzzing sound came through the air, followed by waves of killing intent that penetrated his skin and enveloped him.
This was a fifth-level Xing He Kill-and-Trap Formation. Being an almost fourth-level Array Master himself, Ning Cheng could sense it as soon as the formation was activated.
Facing the release of the Wu Ji Qing Lei City, Ning Cheng could only turn back; he wasn't yet capable of directly confronting a fifth-level Xing He kill formation. He could tear through this kind of formation to escape, but only if he first found one of its formation bases.
A hiss cut through the air as another wave of killing intent burst forth, shattering Ning Cheng's Xing He domain before it even reached him, causing ripples to spread through his Divine Sense.
