How to Survive in the Harem After Being Reborn as an Abandoned Concubine

The original name is "Remembering the Glazed Dream". In her previous life, she loved him with all her heart, but she never thought that she was just a pawn of his, a pawn that could be discarded at any time. She made a mistake and was forced to drink poisoned wine with hatred, and died innocently. After rebirth, she decided to hold on to her heart. She made a "gentleman's agreement" with him when she accepted his favor for the first time, and they would only be a couple in name only. She would become the most valuable woman to him, and she could do anything for him, but she would never show true love to him again. He stamped the jade seal on the agreement and thought, what's the difficulty? However, I don't know when, his heart began to sink little by little, but she really regarded her heart as her own, making him invulnerable. He didn't understand why, until one day, he dreamed of her past life... In this life, what ending has God arranged for them? Ps: Well, this is the non-torture version, and there is also a violent version, it all depends on your mood.