Sung-hyun was born in 1439 and died in 1504 at the age of 66. He was from a family who was prosperous in the fifteenth and sixteenth century. The power he enjoyed when King Sungjong reigned could not be found anywhere else. His father and brothers were also promoted to high positions. And his wife`s family had a powerful background. At the age of 12, Sung-hyun lost his father and was brought up and strictly educated by his mother. His elder brother, who was 18 years older than him, always took care of him as if he were his father. His brother also had an important influence on his knowledge. It was his brother who inspired him to write `Yong Jae Chong Wha.` Sung-hyun showed much interest in calligraphy and music. In his youth, Sung-hyun not only learned from his brothers but studied under Kim Ku-Ji and Kim Su-on. He kept company with scholars such as Choi Su, Kim Yuk, Hong Kui-dal, etc. They helped each other when they had difficulties, and enjoyed nature, talked about life and discussed potery when they had free time. Although he was in the government service for more than 40 years, he was not interested in success in life. He had an amicable human relationship, so he survived the upheaval of the Yeonsan-Kun era and lived a relatively smooth political life. He took charge of literature as he worked for Hongmunkwan. And he visited China three times while in office. When an envoy from China visited Chosun, he alwasys treated him. He left a wide variety of books. He is known to have written 17 books. His outlook on literature was that objects should not be tied to rules. He thought objects always changed. He insisted that an observer`s viewpoint therefore had to be changed. I think Sung-hyun is definitely a literary man who represents the Chosun Dynasty in both quantity of writing and literary thoughts.