MTL - After Wearing the Book, I Became the Second Mary Sue - Chapter 468 specify

In a post-apocalyptic fantasy world layered into multiple realms, humanity faces extinction due to their endangerment of the main realm. Forced to merge all realms back into one, a deity grants humans a leveling system to empower them, lest they become extinct when facing the mythical creatures. Noah, our protagonist, embraces the role of a monster tamer, trading his humanity for strength and eventually transforming into a monster himself. As Noah struggles with his evolving identity, he must navigate a world where the line between human and monster becomes increasingly blurred.

In the third year of the Republic of China, Yao Zhi was 14 years old and the jewel of the governor’s office.

At that time, the young man next to the marshal’s mansion was still physically disabled and had his feet deep in the mud. Yao Zhi stretched out her hand and tried to help him, but the boy, who looked fierce, shut his eyes and was heartless. Yao Zhi has been the white moonlight of all young men in Beijing since childhood. Her crescent eyes were curved, and her beauty was incomparable.

Shen Xu regarded her as a god in his heart and never dared to put her in the bottom of his heart.

He looked up at the gods on a bright moonlit night, never thinking that one day she would take the initiative and rush into his chest. Yao Zhi, who became the pinnacle of his two lives, grabbed his clothes and said quietly.

“Shen Xu, if you ignore me again, I’ll kiss someone else.” Shen Xu couldn’t suppress his youthful emotions. He held the god’s waist tightly. He had no choice but to beg her repeatedly. “Zhizhi… “

“Don’t leave me,” she said, knowing that he was young and humble and that he had feelings as deep as the sea for her.

She wouldn’t leave. She would be the apex of the young man’s heart and stay together with him.

- Description from Novelupdates

Ning Jiang's father was a famous bridge designer but he was framed and the bridge he designed fell. He couldn't bear what happened and died soon. After his death, Ning Jiang's mother married another man who already had a daughter.

The new family treated Ning Jiang badly. Her stepsister, Mo Lan, even got involved in her relationship on purpose. As a result, her boyfriend betrayed her and Ni Jiang's heart was broken.

Meanwhile, Ning Jiang discovered that what happened to her father might be related to her stepfather or a man, Luo Hanshang, the fiance of her stepsister, who was in power of a huge business empire.

To find out the truth behind her father's case and even take revenge, she set up a trap for Luo Hanshang and attracted him successfully. She helped him solve a big case and won his trust. Then he married her as she planned. As time went by, he fell in love with her and even melted her heart, but she never gave up revealing the truth...