baekhyun said he created the dance moves for the bridge in CMB and introduced himself as "I'm the choreographer-cum-singer Baekhyun.
and he continued to explain the choreo: "if u look @ the choreo, i remove my heart and give "life" to Robot Kai who has nothing (no heart) and made him move like me." so chen was like "isn't it u who's following Kai?" and B: "I can't dance well so it seems like I'm copying him