MTL - Blackstone Code - ~ two thousand one hundred and ninety-one

Five years ago, after a car accident, Ye Fan fell from a demonic prodigy to an “idiot”!Five years later, on the same day, his seven older brothers and three uncles all perished on the battlefield, a family of ten loyal martyrs!At the funeral, Ye Fan's fiancée called off their engagement. The stunning sister-in-law declared on the spot, “If you didn't want to marry him, I will! I am willing to carry on the Ye Family line...”Ye Fan felt uneasy, “Sister-in-law, please don't. I'm really not an idiot anymore!”

Arakawa Kouki is reincarnated to a Japan with a different history than the Japan he knows with the memories of his previous life still intact. Kouki was discouraged, “Aren’t reincarnation stories supposed to be at some fantasy world filled with swords, magic and elves?!”

Gu Changge, a noble lady from a wealthy family, is a well-known business legend in Yuncheng, going into business at 15, taking over as President of Gu Group at 18 and becoming Chairman of the family business at 30.
She is murdered by her husband Shao Tianze, just to give his mistress Gu Changle a healthy heart. But a premeditated car accident makes Gu Changge revive in a new guise and settle into an 18-year-old girl, Song Yunxuan.
The new face, young body and experienced soul become her weapons of revenge. In her struggle with the four big families in Yuncheng, can Gu Changge shrink back? Will she open her broken heart again? Can she always head off dangers in power struggles?
Let’s find out if Gu Changge can revenge herself and create glory again.

- Description from Novelupdates