This book is also called Treading the Heavens!
After transmigrating to a vast world of immortals and martial heroes, Ye Fan finds it hard to get ahead, even with his Tyrant Body of the Azure Heavens, because the cultivation resources have been divided among the sacred lands, sects, and great clans.
Fortunately, he binds to a sign-in System when he transmigrates. All he has to do is sign in to grow stronger.
The System offers daily, monthly, and yearly sign-ins, which can accumulate without limit. The more sign-ins he saves up, the better the rewards, with no upper limit.
The rewards are all kinds of things: a lighter, a pill with a unique effect, or even cultivation levels, divine abilities, and peerless techniques.
With the sign-in System, Ye Fan sweeps all before him, defeating one powerful enemy after another.
Ten thousand years later, Ye Fan, having mastered peerless arts, stands in the starry expanse of the universe and proclaims in a voice that shakes heaven and earth: “I am the Heavenly Emperor. I shall suppress all enemies!”