City: Sign in at the Beginning and Double Pass Through the Door

Jiang Han accidentally obtained the sign-in system, and for the first time he signed in to a time and space gate that could travel through all realms. The first world is an intermediate magic world. There are no so-called gods in this world, but there are immortal seeds. What changes will happen when modern financial wars, production lines and industrial revolutions appear in the magical world. What kind of sparks will be produced when the magic of the wizarding world is combined with modern technology... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.