相传苗族先民从中原向南迁徙时，一位母亲为了记住南迁历程、每翻一座山，每过一条河，都在衣服上缝一个记号。
O O B-Person I-Person I-Person I-Person O B-Location I-Location O O O O O O B-Metric I-Metric B-Person I-Person O O O O O O O O O O O B-Metric I-Metric B-Thing O O O B-Metric I-Metric B-Thing O O O B-Thing I-Thing B-Location O O O B-Thing I-Thing O