易学发展到汉末的虞翻表现出全新的面貌。这除了易学自身的发展规律使然,还有东汉经学和政治的重要影响,东汉经学和政治危机使易学家回到易学研究本身。虞翻在学术新时代的影响下创造出独特的象数解经体系,这表现在以卦气为基础,以卦变为其动态表现,以易象为其静态符示的动静结合的阐述模式;取象手段的多样性和卦象衍扩的丰富性;独创卦变系统,对后世言卦变者以至深影响。虞氏易的缺陷在于取象的过分衍扩和其体系碍于注经的需要。 Yi study developed to the late Han Yu show a new look. In addition to its own laws of development, as well as the significant influence of Confucian classics and politics in the Eastern Han Dynasty, the Eastern Han Dynasty Confucian classics and the political crisis returned the Yi study to the study of Yi learning. Under the influence of a new academic era, Yu Fan created a unique system of image interpretation, which is based on Guaqi as the basis, the Gua into its dynamic performance, ; The diversity of the means of taking pictures and the richness of the expansion of the hexagrams; the original system of the hexagrams changed profoundly in the later language of the Gua Zhou. Yu’s defect is easy to take over the image expansion and its system due to the need for Note.