I, the Protagonist Goldfinger

Lin Beifan crossed into a fantasy world, bound the hook system, and the golden finger, which was the protagonist, would hook them up, and everything on them would be synchronized with Lin Beifan.
As a result, he transformed into an old grandfather ring, a divine sword spirit that assisted the protagonist's growth, a system elf, a guardian spirit of martial arts, a mysterious old man who sold secret books, a villain grandfather, a ghost in the years, and even the main god...
The whole world is his trumpet, and he will never return on the road of cheating!
"Protagonists, go and work hard! Those who can't defeat you will eventually make me stronger!"