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Please note that this video is in Vietnamese. There are some English subtitles, but for the most part you will get the instructions of how to make the gimmick and how to perform with it from the visual contents of the video.
Demo video for the effects you can achieve is below. The gimmick should not be a surprise for anybody knowledgeable in magic. The primary value of this video is to see how you can make the gimmick very easily yourself and various ideas for performing with it.
1st edition 2016, length 26 minutes.