Mongke stood above the dead Undead Phoenix, no, White Phoenix, with blood and burn marks all over his body. He had a grin, but the bloodthirsty aura emanating from his body made him more savage than satisfied.
"You were a worthy opponent," Mongke said. After entering the White Phoenix Mode, White Phoenix embodied the word [immortal]. No matter how many severe injuries Mongke placed on him, White Phoenix would heal from and continue fighting. He then used his terrifying regenerative power to learn during this fight, thus increasing his battle experience.
White Phoenix showed he was a true genius at the very end of his life. He absorbed Mongke's skills and experience like a sponge to use against him. Sadly, he woke up too late.