My Lady Is Sweet on the Outside, Dark on the Inside

(New book, The Young Lady Returns After Ten Years Missing, is now available) [One couple throughout + indulgent romance + sweet, gentle girl who's secretly a powerhouse] The Xia family is a prominent Chinese family. Five years after falling from a building and becoming a vegetable, the Xia family's eldest daughter, Xia Yunshu, woke up. The year she woke, she was eighteen. She returned to China to study and stayed with an old friend of her father's. Xia Yunshu had actually died when she fell from the building at thirteen. But her soul didn't pass on. It drifted to a mysterious place, where she spent nearly ten years learning an array of skills before returning. During the five years she was in a vegetative state, she occasionally woke up, though no one knew. During those brief awakenings, she founded Yutian. Yutian takes on every kind of job, from eliminating someone's enemy and guarding influential figures to catching mistresses and doing homework. Fees start at a million. The Qi family is the foremost family in Yucheng, and the eldest young master of the Qi family is a renowned figure there. He took over the family business after graduating from university, and in less than a year, his name had spread throughout the business world. Everyone knew who he was. Decisive and ruthless, he kept everyone at a distance. When Young Master Qi first met Xia Yunshu, all he knew was that she was the daughter of his father's old friend. She'd returned to China to study and would be staying at the Qi home, and he'd been asked to look after her. He was used to being ruthless. He had no idea how to care for someone, and she was lucky if he didn't kick her out. Later, Young Master Qi had to eat his words. He thought his family's young lady was soft, adorable, and utterly lovable. He tried every possible way to treat her well. Then one day, he discovered that this young lady from a prominent family wasn't soft at all. She was the famed leader of Yutian. When it came to ruthlessness, she was every bit his equal. And right then, she was in his arms...