Hattori Feng Dan (1867- 1964) was originally named Ziyun, nicknamed Nettle Pond, and later renamed Feng Dan. I have never practiced it in my life and devoted myself to the research and guidance of China's poems. At that time, he was the head of the selection of Chinese poetry column in Japan's New Aichi News. He is also the host of famous poetry clubs such as Lanpei Poetry Club, Qingxin Poetry Club, Soze Poetry Club, Xiaoxiao Poetry Club and Bingxin Poetry Club. He is also a famous calligrapher and enjoys high prestige in Japanese sinology. In the second year after Yu Dafu entered the third department of Nagoya No.8 College of Higher Learning (19 16), he began to publish poems in the China poetry column of New Aichi News, such as seven poems by the famous Yu Dafu, such as "One Small Step on the Goushan Dike to See the Cherry Blossoms", "Starting from Liuqiao and cruising in the middle of a Gonggou Mountain Road" and "Watching Flowers in the Big Taoyuan". In young Yu Dafu's mind, Mr Feng Dan is naturally an ancestor. At that time, Mr. Feng Dan was fifty years old and Yu Dafu was twenty-one years old. It happens that Yu Dafu's eldest brother Yumanto is also a Japanese student. When he was in Japan, he and Mr Feng Dan were members of the Seagull Poetry Society. This special relationship opened the door for Yu Dafu's longing to meet Mr. Feng Dan.
After studying in Japan for ten years, Yu Dafu has complex and special feelings for Japan: on the one hand, he hates the "great Japanism" promoted by militarists, which makes him deeply feel the pain of being in a foreign country and suffering from discrimination and humiliation; On the other hand, I deeply love the beautiful scenery of the island country and appreciate the hard work of this nation. He touched the kindness and simplicity of the Japanese people with his unique sensitivity as a scholar. Yu Dafu has many Japanese friends. Dai Feng, a famous Japanese sinologist, was the first person to form the deepest friendship when he was studying in Nagoya No.8 Public School. Their communication once shook the Japanese poetry circle at that time.