Have you recommended a novel where the female protagonist committed suicide before her life was over, but she didn't want to lose her memories of her lover?

I read it when I was studying, but I can't remember clearly. the chances are The female protagonist was from ancient times. She was traditional and weak. After she died, she learned that her lover had sinned and was locked in the void space for 1000 years before she could reincarnate. She asked the judge (seems to be?) In order to retain her memories of her past life and wait for her sweetheart to reincarnate with her, the judge agreed to let the heroine reincarnate as a plant animal. Only the plant animal could not speak, so the heroine could retain her memories and not have to go through the Bridge of Helplessness to drink Mengpo Soup. The tragic thing was that the female lead had many twists and turns. She was killed by a vicious child as soon as she turned into a butterfly. She was almost strangled as soon as she was born. After many years, the judge was also annoyed and asked her to leave the human world and become a tree for 500 years. However, the female lead was struck by a bolt of lightning. She could not reincarnate for 500 years, so she went to the City of Vain Deaths. There, the female protagonist used her clear memories to create a space to deceive herself, gradually getting lost in her own memories. The male lead seemed to be a very powerful figure in catching ghosts and demons. He had a very cold personality. He met the female protagonist there, and for some reason, he brought the female protagonist with him to catch demons. One mission was to capture a very powerful demon. The male protagonist imprinted a mark on the female protagonist's hand to protect her. Later, the judge said that the mark was connected to the male protagonist's life and magic. Soon, 500 years had passed and a new era had arrived. The female protagonist's ability to catch demons was already very strong, and she could reincarnate. In the end, the female protagonist wandered between the memories of a thousand years ago and the emotions of these 500 years. In the end, she decided to reincarnate. When they were crossing the Bridge of Helplessness to drink Meng Po's soup, the male protagonist ran over and confessed to the female protagonist that he would wait for him in the world. He kissed the female protagonist and drank the soup together. In fact, I'm talking about the first few chapters of the novel. In the middle, it's about the relationship between the male and female leads. I can't remember clearly. God, brothers and sisters, do any of you know anything? Give me an answer.