The purpose of this study is to sketch the Chosen’s intellectuals-society of the 18th century through Yijae (頤齋) Hwang Yun-seok (黃胤錫)’s Yijaenango (頤齋亂藁). Simultaneously, Yijaenango researched and worked on the materials of the Silhak discourse. It is now necessary to view this book through the prism of contemporary society. This study shows Yijae as one who has contemporary understanding. This study focuses on records that Yijae had of Hong Dae-yong. Hong Dae-yong was the best Silhak scholar and philosopher of the 18th century. While both studied under same teacher, they did not meet personally until after they had matured academically. When we extract the story of Hong Dae-yong in Yijaenango, Hong Dae-yong seems an affectionate scholar. He was also a considerate person - discussing studies with Yijae, sharing his Chinese books, etc. Creating a story from diary entries doesn’t necessarily lead to an independent ending with a single topic. Each of the sub-themes concentrates on one theme or creates other sub-themes. This process leads to finding social networks among intellects. In other words, an ontology of the relationships between people is required. I suggest that this be the strategy of reading Yijaenango.