This essay will trace the historical evolution of kaishu, from its earliest origins to its contemporary interpretations, examining how the script has transformed over time while maintaining its core structural principles. We begin with an overview of the developmental phases of Chinese scripts leading up to the emergence of kaishu. This historical context underscores how the script developed as a refinement of its predecessors. We will discuss how kaishu emerged from earlier script styles, including the Clerical script (隶书), highlighting the crucial transformation that led to the more formalized structure that defines kaishu.