Why are many varieties of Chinese classified as separate languages rather than dialects?

Varieties of Chinese are often popularly called "dialects," but scholars typically classify them as separate languages because they are not mutually intelligible. While these varieties share a common literary tradition and writing system, their spoken forms differ to an extent comparable to the Romance languages, making communication between speakers of different varieties difficult or impossible.12

The persistence of the term "dialect" is largely attributed to the long-standing use of a common, nonphonetic writing system, which has historically unified these diverse speech forms under a single cultural umbrella. However, linguistically, these varieties—such as Mandarin, Wu, Cantonese, and Min—exhibit significant differences in pronunciation and vocabulary.213

Ultimately, the distinction between a language and a dialect can be arbitrary and is often influenced by sociopolitical factors. In the case of Chinese, the lack of mutual intelligibility is the primary reason scholars categorize these varieties as distinct languages rather than mere regional dialects.412