What was the name of this novel? The female lead was called Nangong Li, and she was not very promising before?

Time travel novels. The female lead was called Nangong Li…I used to be a loser
After the female lead transmigrated, she was called Nangong Li... The male lead was a useless king called Sima or something…After the female protagonist transmigrated, she turned from a good-for-nothing into a genius... It was as if he had just transmigrated and was about to be killed by two people sent by his sister who was two years older than him. Just kill those two people…Then, because of the contract signed by the two human blood... She wasn't the biological granddaughter of the Nangong Family, but Nangong loved her the most…The sister who wanted to kill her was called Nangong Aoxue. And a talented younger brother…very small

Answer 1

The book," priceless abandoned concubine ". I recommend this ancient romance novel. The female protagonist goes from the eldest son's daughter to the princess consort who was banished to the cold palace. Her name is Nangong Lingzhu. I hope you like my recommendation.😗