Tan Song Yun, or Seven, is an award-winning actor, singer and model born in Luzhou, Sichuan, China. A graduate of Beijing Film Academy, she got her start as a child actor in 2005 when she filmed the TV series “Wild Chrysanthemum” (山菊花). It was in the 2005 series "Live Your Days Peacefully" (好好过日子), however, that audiences first saw her.

In 2016, following her performance in "The Whirlwind Girl" (旋风少女), Song Yun snagged the Best New Actress award at the 22nd Huading Awards, earning her second Huading award—this time Best Actress—for "Under the Power" (锦衣之下). For her work on "The Fox's Summer" (狐狸的夏天), she won the award for Best Actress in a web series at both the 2nd Asia New Media Film Festival and the 2nd Golden Gudeo Media Awards in 2017.