Zhang Haoxuan felt a bit helpless and strengthened the injection of his bloodline power. The flames spouting from his palm had already turned a gold-red color. The intense gold-red flames reached an extremely high temperature, and the temperament furnace itself began to gradually glow red. Meanwhile, the color of the Black Crow Stone inside was also starting to turn increasingly red.
"The temperament furnace can't be heated any further, otherwise it will burn up," Zhang Haoxuan cautioned.
"It's enough. Please continue to heat it, teacher," Tang San said as he picked up the tongs beside him and clamped the piece of Black Crow Stone that had undergone the greatest color change due to Zhang Haoxuan's direct flame tempering.
This piece of Black Crow Stone had been scorched red, radiating intense heat the moment it was clamped.
Tang San placed it on the anvil, stabilized it with the tongs in his left hand, and his forging hammer in his right hand began to swing.
