《韵法直图》蓝本《切字捷要》韵图“切韵经纬图”四十四韵图与《洪武正韵》四十四韵类有严整的对应关系,“切韵经纬图”竖列三十二声母的编撰体例与《洪武正韵》三十一声母有密切的内在联系,“切韵经纬图”切字与《洪武正韵》小韵代表字高度一致,《切字捷要》韵图“切韵经纬图”实质上就是一部以实际语音为基础全面展现《洪武正韵》音系结构的韵图。 “Rhyme straight map” blueprint “cut the word Czech rhyme map” cut rhyme latitude and longitude map “Forty-four rhyme map and” Hong Wu is rhyme “Forty rhyme class has a strict correspondence, ” cut rhyme Figure “column thirty-two initials compilation method and” Hongwu is rhyme “thirty-one initials are closely linked, ” cut rhyme longitude and latitude map “cut the word and” Hong Wu is rhyme “ Consistent, ”cut the word Czech“ rhyme map ”cut rhyme warp and weft map “ is essentially a rhyme based on the actual voice of a comprehensive display of ”Hong Wu is rhyme" phonology structure.