The Tang Dynasty marks a golden era in the development of kaishu, with two towering figures, Ouyang Xun and Yan Zhenqing, representing contrasting yet equally profound approaches to the script. This essay will explore and compare the distinctive styles of these two masters, showcasing the diverse possibilities within the formal framework of kaishu. We will start by analyzing Ouyang Xun's style, highlighting his refined elegance and meticulous precision. His calligraphy is characterized by a structured, geometric approach, where each character is crafted with precise strokes, carefully balanced proportions, and an overall sense of composure. We will look at examples of his work, emphasizing the sharp lines, subtle variations in thickness, and the consistent spacing, all of which contributes to his distinctive style of dignified refinement.