This Lord is Very Scientific - Chapter 141 - 117: Medical Knight Knicks

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates

The Immortal Dao is ethereal, and Immortals are hard to find.

Li Nianfan had descended into the cultivation world as a mortal. After learning that he has no hope in cultivation, he only wants to live a peaceful life.

However…

The dog he adopts becomes a demon king of a generation when it sees his poems and paintings. It manages to suppress an entire world.

The tree he plants behind his house becomes a World Tree after listening to his zither music, forming a bridge between heaven and earth.

He meets a passerby who is enlightened by him and becomes an immortal sage who leads an entire generation.

When he looks back—

It turns out that the scholar who had been pestering him for his calligraphy and paintings despite having crappy chess skills, is a chess saint from the Immortal Realm. The beautiful woman who comes to listen to his music every night is the number one saintess of the Immortal Realm…

What secrets are hidden within the noble descendant who has returned from exile? The chaotic and ever-changing continent of Vastness engulfs Komer, dragging him into a sea of treacherous currents. His weary soul, battered by countless setbacks, has grown tired of the turmoil of emotions. Will he pursue the coveted power and influence of the secular world, or will he explore the endless magical mysteries of the dark realm? Where will his path lead him?The rise of the weak, orcs, mages, undead, dragons, barbarians is coming—we all take turns on the stage. Let's see who will emerge as the ultimate victor!