This article, based on analysis and interpretation of the Four Treasures of the Study (wenfang sibao), examines the role played by the Southern Tang in enriching Song literati culture. With the success of cultural rejuvenation, the Jianghuai region would become essential to fulfilling the function. Despite that the wenfang sibao originated in a weak southern kingdom, such roots did not affect their eminent image in the slightest. The profound impact of the wenfang sibao upon Song literati culture manifested itself in numerous ways, ranging from enriching connoisseurship and esthetic appreciation to the perpetuation of artistic beauty. Rigorous searches for esthetic artifacts found outside of China by Song literati not only posed challenges to the eminent position of wenfang sibao originating in the Southern Tang, but also necessitated the rethinking of what Huayi zhibian, Sino-barbarian dichotomy, exactly meant in Song China. As a whole, the study of the Nan Tang wenfang sibao substantiates regional legacy as a valid concept for the study of Song literati culture.