Woonyang Kim Yunsik(金允植) was a politician and a representative writer of the last generation of Chinese Literature. He was Advanced thinker of Latter era of the Chosun Dynasty. Also a person who insisted that ``to strengthen own Country by one`s own efforts``. In 1881, as a Yongsunsa(領選使), he was sent abroad to Tianjin-a place of the Ching. In 1908, he took the Royal Letter to Tokyo in Japan for paying Emperor`s inquiring to prince of chosun. When state of affairs was in chaos, he went to Tianjin(China) and Tokyo(Japan). During the times, he wrote Sahang poem(使行詩). Most of the Sahang poems from Sukjinwooyeok Collection(析津于役集)(was written during Yongsunsahang) and Dongsamaneum(東차만吟)(was written during Japan Moonhoohang) are Kyoyoo poem(交遊詩). As a heir of Bukhakpa(北學派), Kim Yunsik had a great sense of duty to meet peoples in the Ching and turned desire to Sahang pome. After that, also had a field trip to Japan and exchanged opinions with celebrities to make his academic status to a higher level. The two Countries had modernized earlier than Chosun, and the experience to the Countries was helpful for his thought transformation. Also it acted as the catalyst, to lead him be a Ongungaehwapa(穩健開化派). When he went to the Ching, he was filled with the strong desire to learn culture but when he went to Japan as a moonhookuan (government official specially for inquiring) the historical situation was moving towards to Korea-Japan Annexation. Finally, he lost the will and was overwhelmed by the culture. then was becoming a pro-Japanese.