The Yu Brother's Case Book - Volume 1 Chapter 2.3

My name is Qin Jue. At only 16 years of age, I'm already the youngest person to ever become an uncle-grandmaster in the Xuanyi Mountain Sect.Also, I'm the strongest being in this entire world!But unlike other transmigrators, I want nothing to do with the outside world and wish to live a leisurely life on a cliff behind the sect, sipping wine and singing songs.That is until one day, a mysterious girl appears in front of my yard…Join Qin Jue as he deals with sneaky sects and greedy, hostile clans, all while raising a "weed" to sentience and creating heaven-defying spirit-energy "guns".

After going bankrupt, Cheng Jinzhi woke up and found Rong Si, her nemesis, lying beside her.
When Rong Si kissed her, she realized that she had returned to twenty years ago, when Rong Si was still a pauper with a lot of debts.
This article is also called “How to Sleep the Winner of Life?” “” Queen, I think your thighs are missing me”

Content tags: entertainment circle, rebirth, happy friends, sweet text
Protagonist: Cheng Jinzhi, Rong Si ┃ Supporting roles: Xia You, Gou Yu, Fu Xinbai, Fu Qiansheng

- Description from novelbuddy

The first time they met they had battled fiercely, just for a mere bunch of herbs. She needed it to save people, and he wanted to use it to save his own life.

Qingyun was probably the only villain who suffered this much.

For hundreds of years, a protagonist has always been barking at him and attempting to harm him, but just couldn’t kill him.

When he spent his days bedridden like a dying man, his life was no better than that of the dead.

People respected him, feared him, secretly cursed at him, but he just wouldn’t die!

But he, the ultimate BOSS, has become an insignificant cannon fodder only to be manipulated and destroyed?

That’ll never happen.

A certain green-eyed man: Cutie, come into my arms.

Qingyun: Heh heh, Lao Zi will teach you how to behave.

*Ding* the world’s most ferocious little cutie has come online~

- Description from Novelupdates