Xu Yuan was not concerned, looking towards the corridors to either side, he whispered instructions:
"Qingyan, even though we now have the Black Death Armor, we mustn't be careless. This armor merely prevents those high-level specters from tracking our movements with the Black Death Mycelial Mat—if we get too close, they can still distinguish us."
Li Qingyan pondered for a moment, glanced at Xu Yuan, and chose to offer a reminder:
"Prince Consort, these specters seem to naturally block the perception of the will-spirit. We can only detect them by sight and hearing."
"I know that."
This wasn't knowledge from the Cangyuan Chronicles, but from Old Man Luo.
Having lived through the great spectral calamity of ten thousand years ago, Xu Yuan had lived with Old Man Luo for so long, he naturally became curious about the creatures known as specters. Chatting idly, Old Man Luo shared with him a lot of information about specters.