Fantasy: Sign in from the Land of Demons

Li Xuan traveled to a fantasy world and was bound to a god-level sign-in system. You only need to sign in to become stronger. "The host successfully signed in at the Demon God's Land and obtained full star talent!" "The host successfully signed in at Taixu Immortal Palace and received the Immortal Killing Sword!" "The host successfully went to the underworld to sign in and obtained the Nine-Revolution Book of Life and Death!" "..." The moment Li Xuan traveled through time, he had already become the king. He was present in every corner of the world, and there was nothing he could do in the dangerous secret realm. Moreover, Li Xuan's strength is getting stronger and stronger as he goes to more and more places, if he is not careful! He is amazing! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.