Hairy crabs are crabs scattered in Jiangsu dialect. The word dialect comes from the book "Explaining Other Dialects by Proclamation Language" in Korea, which varies from person to person. The dialect spoken by the population in China is a political concept, but it is actually a local language. Dialect, also known as vernacular, local dialect or local accent, refers to a language that is different from standard language in a certain area. This title does not take into account the kinship between languages.

Dialects can be divided into regional dialects and social dialects according to their nature. Regional dialect is a language variety caused by regional differences, a branch of national languages in different regions and a regional reflection of unbalanced language development. Social dialects are different social variants formed by social members in the same area due to social differences in occupation, class, age, gender and cultural upbringing.