Skepticism is a rhetorical method formed by flexible use of selective questions, which asks questions side by side with two or more questions, but does not require the reader to choose one of them, but makes the reader question. When the language is coherent, all doubts will be dispelled.
According to the above definition, the use of skeptical rhetoric can be seen in the statement: "How heavy is the water, how heavy is the mountain? The water surrounds the mountains and surrounds the city of Guilin... Is it a mountain city, is it a water city? All in green mountains and green waters..."