In the play, Feng Yin is the second fire phoenix of the Feng clan. Because of Ku Qing's intrusion, his nirvana failed and his soul was scattered. Although Ku Qing harmed Feng Yin, he actually saved Feng Yin. Feng Yin was originally a man who defied nature.Life, if one is really reborn in Nirvana, one cannot escape death, but Kuching gave Feng Yin a chance to live, and returned after thousands of years of calamity as a water-condensing beast.

Feng Yin and Yuan Qi were linked by fate. Although they had a sadomasochistic relationship with Yuan Qi III, fortunately, Feng Yin returned to his throne in the end and renewed their relationship with Yuan Qi.Feng Yin was heartbroken by Yuan Qi because of A Yin in her previous life, and she no longer wanted to have anything to do with Yuan Qi. Yuan Qi was not forgiven by Feng Yin, but he was doomed.

Feng Yin and Yuan Qi are separated by yin and yang. After losing Yuan Qi, Feng Yin understands Yuan Qi's intention and searches for the method of resurrection in the three realms in order to resurrect Yuan Qi.Fortunately, Yuan Qi was finally rescued by Uncle Xuanyi, and a ray of soul was attached to the ancient emperor's sword, which saved Yuan Qi from being destroyed.Yuan Qi and Feng Yin finally reunited and got married.