[youku for Chinese]
▼ Performance(연출)
https://v.youku.com/v_show/id_XNDM3MjY4MzY4MA==.html?spm=a2h3j.8428770.3416059.1
▼ Explanation(해법)
https://v.youku.com/v_show/id_XNDM3MjY3MTk5Mg==.html?spm=a2h3j.8428770.3416059.1

※연출 영상은 2개의 인형을 사용하였습니다.