After Accidentally Falling into the Demon Cult, I Tried to Risk My Life to Make a Comeback

She was born in a deep courtyard and grew up in a snowy field. She was supposed to be the daughter of a noble family. She was imprisoned for her whole life because she met him when she was young, and spent her whole life searching for the truth about herself. He rebelled against his family at a young age and became famous throughout the world in the Demon Cult. However, he was deeply possessed by inner demons and found it difficult to extricate himself. He did not want to be controlled by others. He only hoped to find a pure land for his people and make the world bow to him. A Longyuan Sword stirs up huge waves in the rivers and lakes, confusing people's hearts. Who can hold the sword to turn the clouds and rain? And who is a chess piece among all living beings? The homeland of the Dark Sea Sharks has been destroyed, can the Longyuan Sword guide them to their final destination? Under the white snow, who can break through the long wind with the dragon abyss, the clear whistle and the phoenix song for nine days?