Complex sentence: A famous release was the 黄金九岁山歌黄梅调 (Golden 9 years: Huang mei diao Chinese opera) at the age of 9, in which she starred as both boy and girl singing mandarin opera songs in each duet; it was also her first Chinese New Year album.
Split into simpler sentences: A famous release was the 黄金九岁山歌黄梅调 (Golden 9 years: Huang mei diao Chinese opera) at the age of 9. In which she starred as both boy and girl singing mandarin opera songs in each duet as well as in her first Chinese New Year album.