Supreme Casanova: Ultimate Harem System - Chapter 1: Food Poisoning.

Zheng Tan somehow returns to the year 2003, turning into a black cat. Picked up from a rubbish heap by the Jiao family, he is given the name “Charcoal”, and so begins the life inside Professor Jiao’s family. Zheng Tan remembers that he was once a person, but currently his body is that of a cat. He has no way of speaking the human language, but can understand it, and even retains the thinking and IQ of a young 20 year old youth. Read along as he adapts to this new world, and somehow tumbles from a group brawl to catching a thief.

- Description from Novelupdates

The miracle doctor, Xu Qing, accidentally fell into the water and died. When she opened her eyes again, she found herself having transmigrated into a farming novel. Then, she felt excruciating pain in the lower half of her body. Xu Qing looked down in disbelief. As a thirty-year-old unmarried single woman, she was in the midst of giving birth to a child! Staring at the three babies who were barely breathing, Xu Qing almost went mad. Why did she suddenly become a mother of three?

Her father exclaimed, “How dare you give birth to b*stard children before getting married?! We don’t have a daughter like you. Scram!” Before Xu Qing could even catch her breath after bearing children, she was chased out of the house by her father. Fortunately, her mother pitied her and secretly gave her an acre of land to aid in her survival. With no options left, Xu Qing picked up a hoe and started farming.

‘Hey, that unconscious mister over there, please die somewhere else! Don’t dirty my corn field!’ After dragging the unconscious man to a side, Xu Qing suddenly remembered that she needed help taking care of her children. This man would do!

Later on, Qiao Yanhui knelt down before his angry wife with an aggrieved look on his charming face. He had one child on each arm, and another clinging to his head. He looked up at Xu Qing pitifully. “Honey, it’s the effect of my family genes. I can’t control my genes from producing so many babies…” “Out! Get out now!” Xu Qing kicked him aside. Who knew that the man she picked up turned out to be the father of her children. Had she known, she would’ve left him to die in the corn field.

Humanity was on the brink of destruction. Muyoung, an assassin from the Forest of Death, fell to his knees. There were corpses all around him. For years, he had worked for the Forest of Death and had finally been able to eradicate them. Now, he, himself, was about to die. He closed his eyes as he felt his heart stop beating.

At the feast of the Gluttonous House’s auction, there was a little girl with an exceptional furnace constitution for offer at a sky-high price. Everyone wanted to lay their hands on her. Suddenly, the little girl in the golden cage opened her eyes, radiating a cold gaze. She was no longer cowardly.

She was the gold medal assassin of the 21st century, transmigrating to become the good-for-nothing humiliation that everyone bullied, third miss Nalan Hexi of the genius doctor’s manor.

Meridians completely crippled, no innate skill to cultivate? What is she afraid of? She is the exceptional miracle doctor, and these injuries were nothing in her eyes.

Father doesn’t dote on her, mother doesn’t love her, everyone schemes against her? Humph, an alternate dimension in hand and an invincible spirit pet as well, she can destroy the small Nalan Manor with a flip of her hand!

Ugly complexion, malnourished and sickly in appearance, no one wants her? She recovered her unparalleled looks with the blink of an eye and gained a dozen good looking men as bodyguards!

That overbearing man who’d been sticking to her since the auction. Who said I was destined to be yours? I am my own, no one can decide my future!

A certain man: Then I am yours, will that do?

- Description from Novelupdates