Tang Shaoyang intended to finish the fight the moment he opened the Seventh Gate, Heavenly Vermilion. He thought that would be enough to finish the fight. However, a silhouette remained standing in the middle of the pillar of fire.
The silhouette started to move, walking out from the fire. Supreme Guardian Kong was still alive, and he didn't suffer any injury from the big attack earlier.
His clothes were burnt, revealing his new shiny form. His whole body, from his face down to his feet, turned into a diamond. That was likely the reason he survived the combination of the Heaven Severing Sword and Heavenly Vermilion.
Tang Shaoyang was not disappointed that his attack was completely neutralized. That made him even more excited about the fight. He could no longer hide his grin.
