Click-B is a Boy Band released by the Korean performing arts company DSP in 1999. Different from other groups, they quickly occupied the market with the music style of rock dance music, and flaunted their gorgeous appearance and amazing strength. Singing and dancing while playing guitar, bass, keyboard and drum set. Members are (by date of birth) Yu Ranxi, Kim Tae Hyung, Wu Zhonghe, Jin Xianghe, He Xiankun, Liu Haoxuan and Lu Minhe. In 2002, members He Xiankun, Liu Haoxuan and Lu Minhe retired from the group, and the other four changed their music route and adopted the dance style, which was a great success. In 2004, Click-B and J-Walk (,Zhang) formed a group JNC and released an album. Since then, members' personal activities in different fields of the entertainment circle have also achieved success. Nizi. It means seven-color rainbow, representing grass green.

After the three members quit the league, they used the slogan "7-3=7" to support the seven members who were always together.