Abstract：Abstract: Aiming to explore the mechanism of metaphor creation, this paper proposes a usage-based model of conceptual metaphor, which integrates the schema-instance representation with dynamic construal as elaborated in Langacker (1987/1991), Barlow & Kemmer (2000) and Taylor (2002). Within the proposed conceptual framework, it analyzes explicit metaphors triggered by xiang (Like) in Qian Zhongshu’s novel Fortress Besiedged, and illustrates five modes of metaphor creation, while discussing the function of xiang as a linguistic marker in triggering new modes of metaphorical construal. As exemplified by the creative uses of explicit metaphors, the new model of conceptual metaphor provides, in terms of schema-instance relation and construal, an explanatory basis for bridging up the cognitive foundation and linguistic forms of metaphors in creation. It also offers a more dynamic and systematic view of the conventionality and novelty of metaphors regarding the creating process，enhancing the predictiveness of the theory. The new usage-based model，especially with regard to the schema types and various ways of construal it implied, promises more specific and profound classifications of metaphor creation. Being more predictive and economic, the new theoretical model may enhance applied studies in future.
