Qian Jin was stunned by what he saw. He knew that there were going to be coffins since the Heart of Lucifer had to extract the essence of Lucifer from the corpses of the powerful Fallen Angel Bloodline Warriors after they die, but he didn't expect the coffins to be this big. On top of that, these coffins themselves formed a magic array, and this magic array combined together with the complex magic array on the ground.

"What do you think?"

Lucifer Serage asked with a proud smile on his face. He anticipated this reaction; no one could stay calm after seeing this. In his mind, if gods existed, they would be shocked as well.

"This..." Qian Jin asked seriously, "Were they here before? And the magic array on the ground... it was partially broken before, right?"

The smile froze on Lucifer Serage's face, he didn't think Jiliu Feijing was able to wake up from the shock that quickly and immediately identify one of the key secrets.

That's right! The Lucifer Clan didn't create the underground