Gao Xian had only just arrived here and did not know Iron Shark's background. But he did not take it too seriously. Though Black Rock City's restrictions were stringent, they could not stop a Spirit Transformation expert going all out, much less stop him.
Since Ru Dian knew the other party, she presumably had ways to deal with him. It should not come to a fight unless absolutely necessary.
To avoid having his whereabouts discovered, Gao Xian activated the Taiji Mystic Light Formless Divine Robe to conceal himself. That way, even if they entered the room, they would not be able to see him.
It had to be said, the grandmaster-perfect Taiji Mystic Light Formless Divine Robe was simply too useful. The formless transformations wrought by its Taiji Mystic Light were enough to shield him from the senses of ordinary Spirit Transformation experts.
Through the Taiji Mystic Light Formless Divine Robe, he had further comprehended Taiji transformations where yin and yang merged as one.
There were two reasons he had been able to easily kill Sha San. First, the transformations of the Taiji Mystic Light Formless Divine Robe were exquisitely profound. Second, the polar extremes and the Two Aspects Yin-Yang Sword had fused within and without, producing an exceptionally subtle Nirvana Sword Intent that annihilated all things.
Though Sha San's Primordial Spirit was powerful, it still could not withstand that sword.
Gao Xian was also very satisfied with that strike. It had truly unleashed every last scrap of the divine essence of his swordsmanship. Only then could he slay a god with one sword, leaving the opponent no chance whatsoever.
A Spirit Transformation expert like Sha San would have ranked among the notable figures even in the Profound Bright Church. Killing him with one sword also proved how greatly Gao