Nowadays, not many girls use handkerchiefs. Handkerchiefs were like jewelry for women in ancient times. They were usually folded into concentric squares and tucked into armbands. Handkerchiefs are caring and warm, so ancient women's sworn sworn relationship with Sister Jinlan was also called "handkerchief intercourse". Attach a ring to one corner of the handkerchief and pass the rest of the triangles through it, which is called "Puer Xin He".
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