This research attempts to study the cultural cognations embedded in the spatial oriented cultural category “sì-hǎi”, and the relationship between the cultural category “sì-hǎi” and the Chinese cultural group, with data obtained from the contemporary East Asian Culture of China from Cultural Linguistic perspectives. This research focuses on the evolution of the cultural conceptualizations of the cultural category “sì-hǎi” from a diachronic perspective, and claims that the cultural category “sì-hǎi” is a notion of the spiritual territory which is closely related to the Chinese cultural groups.