Whitman believes that people in cities should establish a harmonious relationship between humans and nature. In his urban imagination, humans are a common link in the entire ecosystem. As a part of heaven and earth, everything is one. Through dialogue with nature, Whitman explored that man and nature should be equal and harmonious. Whitman embodies the unique urban ecological poetics in his essay the Riverbank of the Ferry Crossing Last Winter, which contains Chinese classical thought of harmony between man and nature.