The Book of Songs is one of the classics of China's ancient literature and regarded as the cultural treasure of the Chinese nation. The poem Nan Zhou Guofeng describes the ancient people picking slugs. Roy is another name for slugs. This plant grows by the water, with leaves like lotus leaves and flowers like lotus flowers, and it smells fragrant. This poem expresses the yearning and admiration for the beautiful natural environment by depicting the scene of people picking slugs.