Su Yu hurled out the Golden Key.
At once, towering flames erupted from the Golden Key.
The next second, the flame-wreathed Golden Key became a streak of light and shot into the keyhole in the Bronze Gate.
The instant the Golden Key fitted perfectly into the keyhole, the Bronze Gate before him opened with a thunderous crash.
The moment the Bronze Gate opened, dazzling golden flames appeared before him.
The entire Second Layer of the Saint Mansion was filled with firelight. Had the Bronze Gate not blocked it, that terrifying flame power might have brought all the surrounding water in the Cold Pool to a boil.
On closer inspection, the crimson flames filling the entire space were constantly swirling like a fire dragon!
The moment he saw those flames, the elderly Emperor-to-be inside the Silver Mask beamed and cried, "Hahaha! It's actually earthcore flame dragon fire! Little Yu, your luck is simply incredible!"
"Earthcore flame dragon fire?"
Su Yu's eyes lit up, and he cried out in overwhelming excitement, "Flames like a dragon! Master, this really is earthcore flame dragon fire, ranked in the top twenty on the Divine Fire Ranking!"
Su Yu knew about the Divine Fire Ranking. In particular, he had memorized the names of its various Heavenly Divine Flames so thoroughly that he could recite them backward.
Of course, his Emperor-to-be master had forced him to memorize them back then, along with all the properties of those Heavenly Divine Flames.
It was all to prevent him from failing to recognize a Heavenly Divine Flame if he encountered one someday, letting it slip through his fingers and missing his opportunity.
Earlier, when he encountered the ten-thousand-year frostfire, Su Yu had just escaped from Qin Wuyou's clutches with his life, so he had failed to recognize it at first.