Combining free morphemes and quasi-affixes to produce new words is one of the ways to form network buzzwords. Based on the theory of constructionalization, the present study suggests that the construction “X nao/ naodai” is a constructional change of the conventional words such as “zhangnao (樟脑) ” and “bohenao (薄荷脑) ”, and this process finally achieved the constructional evolution. In addition, other constructions combined with free morphemes and body organs such as “X nao/naodai (脑/脑袋) ”, “X shou (手) ”, and “X xin (心) ” can be further abstracted into “X body organ” construction, representing a person with certain characteristics. The cognitive mechanism involved in the formation of the construction “X nao/naodai (脑/脑袋) ” is conceptual metaphor and conceptual metonymy, and the regulatory mechanism is construction suppression and rhetorical suppression.