The three first-generation seminarians, Choi Bang-je, Choi Yang-up, and Kim Dae-gun, who were also the first overseas students in Korean Catholic history, all lived in Gyeonggi-do at the time of selection, so they had the advantage that Father Pierre Philibert Maubant(1803~1839) who settled in Seoul in early 1836, was suitable for selecting the seminarians within a short period of six months. Among them, Kim Dae-gun and Choi Yang-up became the first-generation Korean priests, and are considered the pioneers who first learned and utilized Western modern studies. The seminarians were summoned to the priest's hall in Hudong, Seoul, where they formed a community preparing for studying abroad while receiving 5 to 10 months of training at the preparatory seminary. Macau's Korean Seminary, which began in June 1837, corresponds to the early curriculum, and missionaries such as the first principal, Father Callery, Libois, and Desflèches provided three Korean seminarians with a wide range of liberal arts education ranging from Latin, which was the initial curriculum, to various foreign languages, international circumstances, humanities, society, natural sciences and music, and doctrines. The study community of Korean seminarians, including Kim Dae-gun and Choi Yang-up, was somewhat shaken by the Macau riots and changes in the seminary's organization, but it was maintained firmly thanks to the solidarity and cooperation of the two students and the care of missionaries, including Father Maistre. The knowledge of Western studies, a modern Western discipline that Korean seminarians learned in Macau, has been properly utilized since 1842 while writing Latin letters or meeting Chinese, European, and Korean people while promoting various private activities as the seminary was transferred to the Liao-dong region. As a result, the history of Western studies acceptance through overseas students, which is one of the movements of voluntary acceptance Western cultures to Korean society 30 to 40 years before the opening of the port in 1876, began.