Kyoukai Senjou no Horizon - Volume 1, Chapter 06: Fated Ones Beyond the Door

Qin Nuo transmigrated into the Great Zhou dynasty, becoming the dim-witted Ninth Prince. As if it’s not enough to be a female transmigrating into a male, (s)he thought that (s)he could just enjoy a life of drinking, eating, and being merry–but no. He ended up being pushed to do something way beyond his abilities and entered the fight for the throne. Internally there is strife among brothers, and a powerful official with great authority; externally there are foreign powers looking to invade, and the discontent of the people that is boiling over. How is he supposed to pave a path through this mess both domestically and abroad? It’s hard to be emperor, and even harder to be a good emperor! This is a story about an emperor farming. While others are farming a field, he’s farming a whole imperial court.

- Description from Novelupdates

This novel is also known as The Yun Family's Ninth Child is an Imp!

She was an unprecedented assassin, a trump card deadly agent, but transmigrated through into Ye City’s number one prodigious good-for-nothing young miss.

I am an ugly woman? I will break out from my cocoon into a gorgeous butterfly that will blind your snobbish eyes!

I am useless piece of heap? Lightning in my hands, I will smite you to a well-cooked crisp!

Her greed and lust for money had no end. She is lewd to the core with no bottom in sight, sworn to have love fortunes blossom all around her. However, a certain someone holding a blade in the left hand and a sword in the right hand began cutting those love fortunes one by one!

The person smiled with perked brows, “Little Ninth, it looks like I have to let you become occupied!”

- Description from Novelupdates

Shen Yinning was originally the Crown Prince Lu Ying's childhood sweetheart and fiancée, but due to her father and brother's rebellion, she was exiled to Gan State and married to a minor local official as the daughter of a criminal. Meanwhile, Lu Ying gloriously married her cousin Shen Yunxi as his Crown Princess Consort.Three years later, Shen Yinning returned to the Capital with her husband. Everyone praised the Crown Prince and Princess for their mutual respect and harmony, and Shen Yunxi often flaunted in front of her how loving she and the Crown Prince were. However, only Shen Yinning knew that the seemingly restrained and honorable Lu Ying came to her chamber every night, completely disregarding the fact that she was now someone else's wife, secretly claiming her and keeping her as his Forbidden Fruit...

There is a famous fairytale. A kindhearted girl whose father and stepmother got married and became a family of five with her two stepsisters. The poor girl who was condemned by her stepmother and stepsisters when her father died. The very fairytale, Cinderella.