Wu Yu had no good idea for now, and so he could only help build the Ancient Demon Dragon Perpetual Devourer immortal design for now, and bide his time.

He knew that if he would be in great danger if exposed. It might also have a ripple effect, and affect his ability to get any more information.

Most importantly, every single demon king in Underworld Dragon's Den was now diligently working on their own portion. If he were to wander around, it would be very obvious. Not only would it be fruitless, it might even be counterproductive by inviting trouble.

Therefore, in the next two years Wu Yu did not think too much about it. He simply continued to build the Ancient Demon Dragon Perpetual Devourer immortal design. This great void immortal design might be related to Jiu Ying, but there was nothing he could do about it.

At this point, the Ancient Demon Dragon Perpetual Devourer immortal design was already half done. If things continued as they had, the Ancient Demon Dragon Perpetual Devourer immortal design would be completed in another two years. No one knew what would...