Blood Assimilation - Chapter 6

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

My mother is the sweet, silly, and innocent protagonist of an angsty novel.

My mother was the substitute for the overbearing CEO’s unrequited love interest who ran off when she found out she was pregnant.

As for me, I’m nothing special. I’m just the child prodigy who became a hacker at the age of five.

…

Genius hacker Gu Chu found herself reborn in the pages of a tear-jerker book.

She had been transformed into a cute little five year-old. Her mother was the tragic female protagonist while her father was the uncultured, boorish male protagonist. There were also a gaggle of hostile, opportunistic relatives and a pretentious, seemingly-virtuous but vile-hearted aunt...

Gu Chu straightened her small little frame and began waging war secretly to help her mother.

What bad intentions could a five-year-old have?

She just wanted to protect Mama.

…

Until one day...

The man who had hunted her across half the globe in her previous life suddenly appeared.

As he stared at the weeping little doll-like child in her princess dress, the man fell silent for a long while.

When she woke up, Lake returned to the classroom of the third year. The classmates were in class with swords and sticks, and the teacher became a female Taoist.
The little fat man in the back seat, how to put two big hammers under his chair.
Rick found this to be a global era!

- Description from Uukanshu (translated)