This article examines a change in how members of the educated elite in Vietnam viewed their kingdom’s place in the world. It argues that, prior to the twentieth century, Vietnamese scholars saw their kingdom as being connected to, or reliant on, the empire to its north, which we now refer to as “China.” In particular, Vietnamese literati believed that moral virtue from the North had spread southward over time and enabled the Southern Kingdom, as they sometimes called their land, to emerge. The flow of geomantic energy from north to south played a similar role. In 1908, however, a reformist scholar named Lương Trúc Đàm published a geography textbook, Geography of the Southern Kingdom (Nam Quốc địa dư), that disconnected the Southern Kingdom ...