He really could not hold on in the end and quickly left with the Heaven Devouring Avatar. This was a failed challenge.

Of course, Wu Yu did not intend to give up. He knew that it was mainly a problem of his low level mastery of the Spirit Penetration Art. Hence, he used some time to recall the process of executing the Spirit Penetration Art. He thought carefully of what he saw and heard. 

When he learned something, he re-entered and challenged again.

It was indeed difficult to battle a puppet eight levels above him. When Wu Yu battled the ones a few levels above him previously, they were no challenge at all.

This was Wu Yu's first time having to repeat a challenge for the puppets.

He repeated a few times and managed to identify some patterns. He was more familiar with the Skeletal Flame Dragon now.

This time, Wu Yu restarted the challenge. The Skeletal Flame Dragon criticized him enthusiastically first before attacking. He was very smart and often attacked with different spirit designs. This way, Wu Yu's previous research was useless.

"Nightmare Extermination Formation!"

Yet another spirit design trapping the Floating Dreams Pagoda. This time, it was no...