mv with Siwon

My friend showed me that mv,because she knows that I'm crazy about Siwon from korean band Super Junior- he looks so sexy there, isn't he?
I was really suprised that he makes a guest appearance in that video. Now DBSK doesn't exist anymore so guys have their own solos.Kim Jun Su is singing that song with Zhang Li Yin. I think the video is great - it's pretty obvious for me.