KO fully shows the explosive power of JJ Lin. Although there have been similar styles such as "It's Me" before, this song "KO" has the feeling that shine on you is better than blue. The lyrics, style and singing skills are just right, and the arrangement sounds quite rich. The countdown of 10 second in the boxing ring and the large-scale ventriloquist performance all create the artistic conception of a real man. On the inside page, a photo of JJ Lin wearing boxing gloves is just right. The red curtains and Zorro's clothes are really free and easy.