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After seeing the mechanics shown by the instructors, it reminded me of the "Dragon Dance", a traditional event that takes place every year in China during the New Year. This event is a project done by many people, just like the sticks that appear in this work, and each stick has a person underneath to manipulate the dragon's dance.                                             https://youtu.be/Mwbne5EwPHU                                 Here is a link to a video of the dragon dance                        【第一次舞龙灯现状-哔哩哔哩】 https://b23.tv/uw02Suw I changed the shape of the sandwich to a circle according to my idea, making the structure inside look like a piston engine. This did help a little with the operation of the mechanism.