"Hmm?"
The cultivators in the formation were stunned.
None of them expected a voice to sound from outside the Hellfire Formation that could block spirit consciousness transmissions after Wu Yuan's statement.
It was rather ironic.
To Nangong Ling's group's delight, the intruder seemed to be on their side!
As the one in control of the Hellfire Formation, Wu Yuan could naturally see through the black smoke and know what was happening outside.
He took a glance and saw that there was only a single person out there.
When he saw that this was a late-stage Nascent Soul, he was relieved.
A Nascent Soul at the side revealed killing intent and looked towards Wu Yuan menacingly; he gestured with his hand that he wanted to behead the person outside!
Wu Yuan shook his head.
For some unknown reason, he felt an odd, indescribable feeling towards this intruder.