Wang Huayun
The subject-predicate and attributive-head structures composed of the noun“man”, which contains the semantic features \[+rude, tough\], gradually lexicalized into disyllabic adjectives starting from the Northern Song Dynasty; “man (蛮)” grammaticalized into an adjective with a degree scale in the Yuan Dynasty. When the adjective“man (蛮)” functions as an adverbial to modify qualitative adjectives, modal/psychological verbs, and verbs representing repeatable actions, it grammaticalizes into a degree adverb or a frequency adverb in dialects respectively, or is accompanied by sound changes that fill the gaps in the coordination of sound, rhyme and tone. In the late Ming and early Qing Dynasties, the degree adverb“man (蛮)” appeared in the central dialects and spread to the common language and surrounding dialects; the frequency adverb“man” has been found in the Hanzhong and Huanggang dialects so far, and its grammaticalization is believed to have started in the late Ming and early Qing Dynasties.