The Three Realms of the Heavenly Dao System

Lin Yi, an ordinary high school student, accidentally obtained the "Tiandao System" and traveled to the world of immortality, only to find that it was divided into nine realms - the lower three realms, the middle three realms, and the upper three realms. Each realm is divided into three small realms, making a total of nine realms. The road to immortality is long, and he vows to conquer the nine realms and dominate the sky.