This piece of black satin spectacle case cloth is rectangular, with couching stitched belt and ribbon patterns in three blue colors in the edge. On the black satin are embroidered orchids and butterflies. Techniques of diffusion between two colors and color fading are both applied; threads in purple, pale pinkish purple, green, light green, yellow, red, pink, white, lake blue and pale blue are used to weave the patterns through couching stitch and dotting stitch techniques. Couching stitch is to twist the threads and couch them accordingly to create the pattern, and then nail the contour, similar to the skill of flat gold threading. To avoid too large distance between threads that might infringe the appearance, in some embroidery works threads are only couched within the contours to decorate instead of being nailed as well. This is more complicated than stitching insect antenna with single threads, requiring higher quality silk threads and more skillful operating processes. This work is of full composition as well as expressive and clear patterns.