The black mist forced Huang to back off. He looked at his hands and could see the black mist starting to corrode his armaments. He then used his Qi toward that energy off and attacked Li Xuanfa from a distance. Spear is a weapon that gave the maximum possible range out of all.
But Li Xuanfa didn't mind his action as he knew how powerful his Nine Yin arts were. It was one of the core cultivation art of the Black-Devil church and rumored to be a God-level energy art. The aura of Nine-Yin was said to be able to corrode and destroy everything.
True to the description of the art, even after using the spear, the aura managed to climb up and stick to Huang's equipment, corroding it slowly.
"You should stop resisting Young master Huang. You would never get rid of my energy arts. It is like a bane to you."