She is the Red Rakshasa, the leader of the Demon Cult, and the last Nine Tails of the Demon Clan; he is Yun Duanyue, the leader of the martial arts alliance, and the only young master of the Immortal Palace. A "symbiosis lock" tied Jiuwei and Yuewen together - the key was in his bones and blood, and the lock cylinder was in her spine. After three years of marriage, they hide each other's sharp edges; once they have a crack, they reflect each other's sincerity. When her back hurt, he used moonlight to relieve her pain; when his cracks expanded, she used fox fire to temper his pain. It's not about running away or fighting - it's about letting the cracks sprout and letting the key and the lock cylinder grow into the same flower. So, when the world exclaimed about their old enemy, the moon and the fox stood side by side: "We will no longer run away, we will give the world a new answer."