Metonymy is a means of expressing one conceptual entity in terms of another.Metonymy is multimodal.Metonymy at the linguistic level can be words,sentences or discourses.Conceptual systems are multimodal and three-dimensional.Language expression is linear.Language expression inevitably carries the characteristics of"using the part to represent the whole"and"using a point to represent a surface",thus exhibiting selectivity,ambiguity,economy,and other features.Language expression is largely metonymical.Most indirect expressions or indirect speech acts are metonymies.Due to its unique word formation,grammatical features,and tendency towards indirect expression and fuzzy thinking,Chinese is a highly metonymical language.