아쉽게도 1분 쯤 조미씨가 JJ 작곡이라고 언급하셨네요... 

정용화씨 단독작곡이랍니다...^_ㅠ 

그래도 호란씨랑 둘다 좋은 곡이라고! 능력자라고!!...

....능력자 맞긴 맞아요...^_ㅠ

Super Junior M Zhou Mi's "Nihao China" 

*It's a radio segment where Zhou Mi teaches Chinese to Korean listeners. He uses the Chinese lyrics of Checkmate.

Around 1:00 though, Zhou Mi unfortunately mistakenly says it's composed by JJ ^_T....

Still, both the DJ (Horan, vocalist of Clazziquai) and Zhou Mi praise the song and say it's great. Horan says (the composer) is very talented.