In a broad sense, the term “Xia culture” means the culture of the Xia dynasty [ca. 2100-1600 BCE] period. In a narrower sense, however, it refers to the culture of the Xiahou 夏后 clan of the mythical founder Yu 禹. In much of the contemporary research, the question of the primary ethnic affiliation of Xia culture is often overlooked and obscured, thus blurring the distinction between Xia culture in the broad and narrow senses. This has resulted in considerable conceptual and epistemological imprecision. Research on Xia culture can be conducted in two main ways: on the one hand, what has been called “metropolitan conjecture” and, on the other, cultural comparison. Departing from the method of cultural comparison and bringing together temporal, spatial, and cultural elements in our analysis allows us to distinguish a primary central area within the “region of Yu” that coincides with Xia culture in the narrow sense, as reflected in later phases of the Wangwan 王灣 and Meishan 煤山 regional subtypes of Longshan culture [Longshan wenhua 龍山文化], from the later phases of the various archaeological remains found within a secondary and tertiary central area, which can be included in the category of Xia culture in a broad sense. Erlitou 二里頭 culture should be regarded principally as part of Xia culture. As such, the Meishan and Wangwan subtypes of Henan Longshan culture, along with the first to the fourth phases of Erlitou culture, can be seen as making up a consistent Xia culture.