Devil's Contract: the Eldest Lady Is Both Beautiful and Crazy

[A supernatural novel that is neither scary nor thrilling] He, Qianqiu, is a cold devil carrying a huge secret. She, Lin Yingxi, was a delicate and frail young lady, but she was involved in a bloody kidnapping because of a family conspiracy. With her life hanging by a thread, she had to sign a contract with the forbidden devil to save her life. But later he was told that the price was his own soul? ! A wish, a transaction, treasures, time, blood... Helping again and again, Lin Yingxi watched as her most precious thing was taken away by him without mercy. What will be next? "You helped me again this time. Tell me, what's the price?" "Go shopping with me." "?" The cold, sinister, powerful and mysterious male protagonist vs. The wealthy, kind, princess and sick female protagonist