Both of them are famous singers in Hong Kong. Zhou Guoxian has won many music awards, and his representative works include "Don't spit" and "Appreciate the jet lag". Juno Mak is one of the representative figures in the Hong Kong music scene, and his representative works include Xitie Street and Dark Room. Besides music, Zhou Guoxian and Juno Mak also dabbled in other fields.

Zhou Guoxian once participated in the movie "The Secret Agent of the Great Wall" and so on, while Juno Mak is an excellent music producer who has made songs for many famous artists.