The Yin Serpent Ancestor had naturally considered making a move several times, but every time he did, an inexplicable sense of danger enveloped him.
It seemed that the moment he acted, that terrifying aura of the world's calamity would drag him in as well.
Under his influence, Lu Xiaotian would undoubtedly die, but he himself would also have absolutely no hope of surviving.
Thus, the Yin Serpent Ancestor had remained hidden at the side. An old monster like him was never short of patience, but this wait lasted more than two hundred years.
The Yin Serpent Ancestor watched Lu Xiaotian sway in the storm of the world's calamity, only to turn danger into safety in the end. He had actually failed to find an opportunity to strike.
It was not that there had been no opportunity at all. He simply did not want to drag himself into the attack while targeting Lu Xiaotian.
He could sense that Lu Xiaotian had remained on guard against him throughout his struggle against the world's calamity.
Now, Lu Xiaotian had openly gone to retrieve the Yellow Yang Divine Marrow, even taking away the nearby Yellow Yang Marrow Fluid along the way, without any intention of leaving a bit for him.
Anger surged in the Yin Serpent Ancestor's heart. This brat was truly arrogant.
Anger was one thing, but Lu Xiaotian had not feared him even while resisting the world's calamity. Now that he was safe and sound, the few glances Lu Xiaotian swept over him as he left still made his heart jolt.
If they fought, the Yin Serpent Ancestor truly had not the slightest confidence.
This fellow's fortune was astonishing, while the faintly transmitted aura of the dragon race gave him an inexplicable sense of suppression.
It was a suppression close to instinct.