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https://v.youku.com/v_show/id_XNDE3MzE1NzgyNA==.html?spm=a2hzp.8244740.0.0
The magician shows a white silk and ties a knot. When untying, one silk changes to 2 silks. Mix these 2 silks with a red silk, then produce a tied yellow silk, next use the yellow silk to produce a tied pink silk... Over and over, finally produce total 10 silks!
Comes with 12 silks (45cmx45cm) and instructional video.