In the play, Feng Yin is the second fire phoenix of the Feng clan, but Yuan Qi made him fail in nirvana and his soul was scattered.In order to make up for his mistakes, Yuan Qi took on the mission of gathering all the Fengyin Immortal Essence.

Yuan Qi and Feng Yin had a sadomasochistic relationship in the third life. Feng Yin, who had not achieved nirvana in the first life, secretly rescued Ku Qing, which led to a cycle of cause and effect. In order to get the Fire Phoenix Jade, Ku Qing caused Feng Yin to fail in Nirvana and the immortal essence was dissipated.In the second life, he had a love-hate relationship with Ayin, a water condensation beast who possessed the immortal essence of Fengyin, for thousands of years. In the third life, Yuan Qi and Feng Yin, who had returned from calamity, renewed their relationship.

Yuan Qi hurt A Yin too much. Feng Yin, who returned with A Yin's memory, hated Yuan Qi and never wanted to have anything to do with Yuan Qi. However, Yuan Qi's ending was tragic. In order to resurrect the disciples of Dazeshan, he spent all his energyHis own power of chaos finally fell.

The sadomasochism between Yuan Qi and Feng Yin III ended in BE, but in the extra story of the novel, Yuan Qi was resurrected by the demon god Xuan Yi, and he and Feng Yin became righteous.