MTL - Rebirth of an Abandoned Woman - Chapter 246 uninvited guest

A surgeon accidentally got the blessings of a system, shocked the medical industry, and rejuvenated countless people.

- Description from Novelupdates

5 years after the world changed, the final boss appeared.

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

This is the story of an ignorant scum who pretends to be a scholar and goes to the world of Meiman to slaughter various scholars and bosses.

This is also a story about pretending to be a fool instead of pretending to be an idiot.

When the heaven will entrust a hero with a great responsibility, he must first take his nickname ‘Problem’, let his online name be ‘Jiancao’, and change his character to ‘conscience’.

Except for the protagonist’s surname Mei, everything else is fine.

- Description from novelbuddy