MTL - Chaos Of Beauty - Chapter 34 Harem Four Concubines

Diagnosed with cancer, she decided to give up the baby in her womb.She had originally planned to have an abortion, get divorced, and then face the arrival of death calmly, hallowing he and his new love to be together.However, he didn't let her go easily. He lingered with her day and night as she grew weaker and weaker, just to leave a child for his infertile new lover.Lying on the hospital bed on the verge of death, she begged, “Take my life and just let me go.”The cold and aloof man knelt in front of her tombstone, holding her favorite gardenias, staying day and night, murmuring with red eyes, “Sweetie, come back. Please don't kidding me...”

Yang Qi was the son of the patriarch of a wealthy family from a small town.

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

When Su Jiu dies on her eighteenth birthday, she transmigrates into a novel about painful love and becomes an adorable four-year-old child.