All Mages Sign in for a Million Years at the Beginning

Lin Fan traveled through time and came to a different world with magic, but he came to this world as a soul, and obtained a god-level invincible sign-in system at the beginning. He signed in for a million years at the beginning. When he signed in for a million years, what kind of disturbance will be caused in this world, and how will Lin Fan start his pretentious journey. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.