“四经二纬说”中的“四经”指六书中能够造字的前四书 (象形、象事、象意、象声 ) ,“二纬”指不造字的后二书 (假借和转注 ) ,这是第一次对传统六书的科学分类。“四经二纬说”是受宋明“转声说”和班固“四象”之名的启发提出的 ,它对清代戴震“四体二用说”有直接的影响 The “Four Classics” in “The Four Classics and Two Wefts” refers to the first four books (pictograms, images, images and sounds) that can be made in the six books, and the second weft And annotations), this is the first scientific classification of the six traditional books. The “Four Verses and Two Wefts” was inspired by the name of “sounding” by Song Ming and the “four images” of Ban Gu, and it has a direct impact on the “four-object dualism” of Dai Zhen during the Qing Dynasty