Abstract
Conceptual metaphor is characterized by two important features—systematicity and complexity. This article is primarily concerned with IDEA metaphors in Chinese and attempts to explore how systematicity and complexity have structured the IDEA metaphorical hierarchical system. Four principal IDEA metaphors are investigated, namely, “IDEAS ARE PEOPLE”, “IDEAS ARE PLANTS”, “IDEAS ARE OBJECTS”, and “IDEAS ARE FOOD”. It is found that the relationship between metaphors and human thought is systematic as well as complex and that systematicity and complexity of IDEA metaphors intertwine with each other.