I'm Traveling with My Fleet

The protagonist, Lin Ziyun, suddenly stumbles upon a time-travel trend one day, only his own journey seems different. While others are gifted with systems or gods, he, on the other hand, is left with a fleet of fleeing soldiers and a single-function portal. The portal: Journey through countless worlds, grow yourself, and grow your fleet! The protagonist asks: MMP, why are all my enemies so powerful? Can't I just have some fun time-traveling fun?