Heumheum sinseo (Toward a New Jurisprudence) published by Dasan Jeong Yak-yong (1762-1836) in 1819 clearly shows that Joseon legal specialists endeavored to manage judicial affairs by bridging the huge gap between imported Chinese legal system and indigenous customs. Their efforts, however, were not limited to merely pointing out the affinities and divergences, which existed between Chinese law and Korean law. In particular, Jeong Yak-yong adopted Chinese forensic science and reinterpreted Chinese case narratives in the context of Korean legal culture. His Heumheum sinseo is one such case, which attempted to reconstruct the Korean legal tradition within the Chinese tradition of thinking with cases or an 案. The main goal of this article is to examine how Korean legal specialists reestablished a way of judicial thinking through Chinese legal cases, with a focus on Heumheum sinseo. Furthermore, this study will illustrate how a genealogy of specialist knowledge was constructed in the East Asian tradition in which legal norms were rooted in Confucian ethics.