在乾嘉年间象数易的极盛时代,以象数易研究丰硕成果享誉学界的张惠言,以极大的理论勇气,超出门户陋见,按义理派的解经路线写出《虞氏易言》一书。该书不用象数学的一例一言,却吸收、运用了它的成果,深刻阐释卦爻辞中蕴含的政治智慧与人生哲理。它并不否定象数学,实则与之相辅相成,相得益彰。张氏以此书倡导兼综并蓄的易学新方向,对于清代后期易学发展起到非常重要的作用。南宋时代,朱熹曾经把象数、义理两派理论融为一体,大大推动了易学的进步。数百年后,张氏沿着他的路线,将易学主潮从象数易再度拉向融合之路,在易学史上同样功不可没。 In the heyday of the Elephant Emperors in the years of Qianlong and Jiaqing, Zhang Huiyan, a renowned academician who studies fruitful results in elephant numbers, devoted great courage to surpass the outliers in his hometown and wrote “Yu Shi Yiyan ”This book. The book does not use a word like mathematics, but absorbs and uses its achievements to profoundly explain the political wisdom and philosophy of life contained in the hexagrams. It does not deny that mathematics, but in fact complement each other, complement each other. Zhang’s advocacy of this book and the new directions of integrative Yi-ology play an important role in the development of Yi-ology in the late Qing Dynasty. During the Southern Song Dynasty, Zhu Xi once integrated the theory of two figures of the elephant and the theory of justice into one and greatly promoted the progress of Yi-ology. Hundreds of years later, Zhang along his route, will be easy to learn the main trend from the figure to easily pull the road to integration again in the history of Yi learning is equally important.