From Zhao Xing's current cultivation perspective, the third seal of the Thunder Sword was not very difficult.
However, when the moment came, Zhao Xing changed his mind.
Because Qing Yu Zi had been struggling within the barrier, like a fierce tiger trying to break out of its cage.
"What's going on with Old Qing, such strength?" Zhao Xing's hand hovered in the air, looking at Qing Yu Zi in disbelief.
It was no longer appropriate to describe Old Qing as a corpse, because in such a short time, Qing Yu Zi's body radiated a strong Taiyin Origin energy, consistently increasing.
Very eerie, from the perspective of life aura and soul, Qing Yu Zi was undoubtedly a dead person.
Yet from the perspective of Spiritual Energy Origin fluctuations, the Yin attribute on his body grew heavier.
Zhao Xing immediately stopped his hand and scrutinized Qing Yu Zi:
"This is truly bizarre, I have never seen anything like this."
"How was this even achieved? Could it be some kind of sacrificial spell?"
