Cao Zhen spoke with a faint, serene smile on his face, "As for me, I also know about Yin Yang Qi and possess it."
As he spoke, he raised his other hand, which wasn't holding the sword. A swirl of Yin Yang Qi appeared in his palm. With a light wave of his fingers, the Qi dissipated. He then calmly said, "However, I did not use Yin Yang Qi. In this world, it's not only Yin Yang Qi that can achieve ceaseless vigor. There are forces in this world that can be endless and inexhaustible."
Cao Zhen continued, using the tone the Black Dragon Sword Spirit previously liked, "It's understandable you don't know, after all, you are merely a small Half-step Golden Immortal, not even reached that level yet."
The Black Dragon Sword Spirit flew out from the sword, looking disdainful, "You dare to call yourself a small Half-step Golden Immortal! You are merely at the Late Immortality Regainment Realm."
