Liu was born in Shenzhen, Guangdong province to a Hakka family and began as a singer by ranking fifth in the fourth season (2009) of a singing contest in China, Super Girls (Chinese: 快乐女声), or Happy Girl.

[1] Unfortunately, Liu Xijun lost her challenge to Yu Kewei with her song "I Only Care for You".

Liu Xijun's musical style could be categorized as classical pop music, such as Deng Lijun, she owned nearly all the characters which Chinese traditional singers have had.

[clarification needed] Even though her songs still have her own features, taking "Love Garden" for instance, this song is standard pop music, depicting a tale of a girl's first love.

Having experienced Super Girl 2009 as her precious fortune, Liu Xijun improved her singing skills greatly when she signed with EEMEDIA after Super Girl, and started her new music career.