Unbelievable! You will be invincible on the first day you sign in!

Unbelievable! You Will Be Invincible on the First Day You Sign In! follows the journey of Lin Yu, a young man transported to a world of immortal cultivation where he becomes a handyman disciple of a sect. Equipped with a heaven-defying sign-in system, Lin Yu gains incredible powers with each daily sign-in, including invincible cultivation, top immortal techniques, immortal weapons, full-level alchemy, and heaven-destroying techniques. This fantasy martial arts xianxia novel promises an exciting and action-packed adventure with a male protagonist always at the peak of power and coolness.