Basho left Edo and set out for Hakone where he found it enchanting that Mount Fuji was hidden by misty rain; in Suruga, he was walking along the Fuji River when he saw an abandoned child and wrote a poem "Saru o kiku hito sutego ni aki no kaze ika ni" (those who listen to the monkeys: what of this child in the autumn wind?) to get into Du Fu's (a Chinese poet) mindset.
芭蕉は江戸を経つと箱根で霧しぐれに隠れる富士を趣深いと感じ、駿河では富士川のほとりで捨て子を見て、「猿を聞く人捨て子に秋の風いかに」と詠んで杜甫の心境に迫ろうとした。