It must be noted that Qingfeng Li's Thunder Immortal Sword was extremely powerful and could turn ordinary demon beasts into dust, which was why he was surprised that Yin-Yang Sky Roc was only slightly wounded and had just lost some feathers.
However, Yin-Yang Sky Roc didn't think so. It opened its mouth and issued shrill shrieks.
It was the most severe wound it had ever gotten in the past hundreds of thousands of years and it was furious.
Even as an undead beast, it possessed a trace of awareness and emotion.
Yin-Yang Sky Roc spread its wings and fast as wind, it came to Qingfeng Li's side instantly before swinging its wings toward him.
Without hesitation, Qingfeng Li lifted the Thunder Immortal Sword which collided with its wings with huge banging sounds.
"Its force is so great," Qingfeng Li thought to himself.
Equipped with Mortal Purgatory Body and toughened by nine-colored thunders, Qingfeng Li possessed tremendous force.