Become Stronger by Owning a Monster Prison

By chance, Chen Lin obtained a prison where monsters were imprisoned. Kill a monster to gain its power, and capture a monster to enslave it. The city is in ruins and cloudy. Countless twisted giant mecha insects converged into a torrent and rolled over the ground. The giant with exaggerated size and red eyes ruthlessly tore apart all life. Further to the horizon, the huge war carrier is accumulating more terrifying power, intending to destroy everything! The next moment, Chen Lin fell from the sky, raising the corners of his mouth and waving the sword in his hand. The hundred-foot-tall black gate rose from behind him. "You all go to my prison!"