Library

The book titles are also: "Step by Step" and "The Development of the Calculating Demon". I was cheated, drove fast, was knocked off a cliff and woke up again, but I came to the ancient Yin Kingdom. I had the body of the best assassin in the world, but I didn't have the level of a master. I wanted to live a carefree life with martial arts, but because of the assassin's body and name, I had to keep changing in order to survive. Let's see how an assassin with advanced thinking and knowledge of modern people can "fight monsters", upgrade, and pick up girls in this era of rampant martial arts...

This is a world where the weak eat the strong. This is a war-torn world. Chaos - seems to have become eternity; war - seems to have become the theme of fighting between sects, rampant demons, and battles between countries... Let's look at the young man who was born in a wealthy family and grew up in the mountains. He just wants to be a small doctor, aloof from the world, and live a happy life. The young man who is trapped in a lot of fog, national hatred and family feud, how to change his fate against the will of heaven, practice martial arts, how to avenge his family, how to use his wisdom and ability to kill evil demons and demons...