The theme song is "The Girl Diving into the Sea".

"The Girl Diving into the Sea" is a song composed and composed by the Huaxia Light Music Troupe and performed by the Huaxia Light Music Troupe. The song is pure music without lyrics and is included in the album "Chinese and Foreign Instrumental Music and National Standard Ballroom Dances· "Blues" was released by Bermuda Culture on August 25, 2017. The album contains 12 songs.

Introduction to other versions of the song "Girl Diving into the Sea":

1. Cai Miaotian's sung version of "Girl Diving into the Sea" was composed by Wang Liping, lyrics written by Zheng Nan, and sung by Cai Miaotian A song included in the album "Cai Miaotian Solo Album", released on January 1, 1985.

2. Xu Yuyan's pipa performance version of "The Girl Diving into the Sea" is a song performed by Xu Yuyan. The song is pure music without lyrics. It was included in the album "Pipa Performance" and was released in February 2005. January 1st.

3. The electric guitar version of "Girl Under the Sea" is a song played by an electric guitar. This song is pure music without lyrics. It should be included in the album "Autumn's Footprints Guitar Works". Released on December 4, 2020.