The Interstellar Era Starts with a Military Factory

Zhang Yu had just traveled to the interstellar era, but before he could recover, he was photographed by the enemy in the next universe due to an operational error of his predecessor. "This..." Looking at the quiet and bright starry sky in front of him, and feeling the alarm from his brain in his ears, Zhang Yu was stunned. And his hand was still on the operating panel of the Empire's newly developed Titan Fortress-level arsenal. The most important thing is that he is the only living creature on this planet fortress with a diameter of 54,513 kilometers. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.