I Can Use the Powers from Books, and Now I’m Invincible!

[Solo protagonist / no female lead + everyday life + urban youth + nearly invincible]

One day, someone came looking for Yang Yuan.

That was the day he learned the truth about the world.

That was the day he stood at the pinnacle of the world.

That was the day he used a technique that had originally appeared in a book.

That was the day he became China's guardian deity.

(The blurb doesn't do it justice. Please read the story.)