The band is named after the number, representing there should be no boundaries in music. They work and merge with classical, rock and jazz music. Band members come from varied background but are all experienced musicians. Some of them are full-time professionals. The band believes one should jump out of the box to reach the freedom of music. They focus on the music arrangement, at the same time takes into account the improvisation and interaction with the audience. They are wild but delicate. Band members include Anyu, Yaya, Esther, Matthew, Paulo and Iat.