1. First insert it from the bottom of the insole with a needle and thread, then fix it, and wrap it around the edge of the insole before inserting it.

2. Connect the insertion point of the needle and thread into a triangle by the above method.

3. After connecting into a triangle, insert the needle into the back of the insole, go out from the vertex position of the triangle, go in from the vertex position of the triangle to the hypotenuse, and then pass under the line of the first triangle.

4. After being worn out, insert the back of the insole from the position where the hypotenuse was inserted in the previous step to form two adjacent triangles.

5. Sew a triangle along the edge of the insole in the same way until a circle is finished, and tie a knot on the back of the insole to complete the edge locking.

In the folk custom of China, the embroidery decoration of clothing, shoes and hats is often full of certain moral connotations, placing the good wishes and ideals of relatives. In the past, the insole was embroidered by her mother-in-law for her newly married wife. The bright red foundation reveals the joy of her wedding and the joy of her mother. The patterns in the insole symbolize people's beautiful yearning for life. In the picture, the flowers embroidered by this pair of insoles are shaped like peony, which means that flowers bloom with wealth.

Insoles are widely used in shoes, health care and special functions; Generally, it can be divided into shoe-making industry, shoe factory, application insole and market commodity model. Insoles used in footwear industry mainly match the outsole and midsole of shoes to make corresponding shapes; According to the bottom plate or panel of the shoe last, the size plate is made and the corresponding shape is made.

Market commodity insoles are mainly products that sell insoles directly as a commodity, which are designed by developers and circulated in the market.