W80xL100mm, China
(If you see this image on an iphone, that will be close to the actual size.  This embroidery is very small)

This is a piece of typical Beijing style embroidery with the use of the Da Zi stitch which is a specific to the Beijing embroidery.  With the Da Zi stitch each stitch is required to be of the same size, spacing and height, this demand a embroider to be able to use the same pressure for each stitch and to know where each stitch should be located.  The Beijing style embroidery uses Da Zi stitch as a colour shade filler, each stitch is looped individually.  The Beijing style embroidery work is labourious; in 1 sq cm, there would be 150 Da Zi stitches!