Guarding a reservoir? What I am guarding is the long river of time!

After transmigrating, he was still guarding a damn reservoir? Wait, this doesn't seem to be a reservoir?! ....... One day, while fishing in the River of Time, Su Mu encountered an Empress swimming against the current. "Who goes there? Where are you headed!" "To the Upper Realm, to save someone." Looking at the white-robed Empress, Su Mu put down his fishing rod and said faintly, "Saving people is fine, but pay the toll first." ..... Even dogs come to dip a paw in the River of Time? Just wandering around the River of Time whenever they feel like it? Regarding those Immortal Emperors who recklessly swam against the current of the River of Time and disrupted the temporal order, Su Mu stated "The past is the past, and the present is the present." "If you all act recklessly, how am I supposed to function as the Governor of this waterway?" "Also, you protagonists who pass through the River of Time to travel to various worlds—does transmigrating not require a toll?" "No money right now? Take a loan then; come sign here." The various protagonists expressed their grief and helplessness: "Before transmigrating, I was burdened with a mortgage. I've damn well transmigrated, and I still have to carry a 'Transmigration Loan'??"