Cage is the theme song at the end of the film She Disappeared, sung by Diamond, written by Tang Tian and composed by Lei Qian. Diamond (1989 September 10) was born in Tianjin, a popular female singer in China, and graduated from Tianjin Foreign Studies University.

20 12 participated in the "K-POP world celebration" singing competition and won the championship in China; In the same year, he represented China in the Korean final and won the best prize. July 20 13, officially debuted as a member of Korean women's group SunnyDays. In 20/0/4, Kloc won the annual championship of Zhejiang Satellite TV singing talent show "The Voice of China Season 3".

"She Disappeared" plot:

He Fei's wife Li Muzi mysteriously disappeared during her wedding anniversary trip. When He Fei searched hard for no results, she appeared again. He Fei insisted that the strange woman in front of him was not his wife, and his wife took out her identity certificate to prove herself. Both husband and wife seem to have skeletons in their closet. With the intervention of gold medal lawyer Chen Mai in this bizarre case, more mysteries gradually surfaced.

He Fei, the hero of the film, knows that his only daughter, Li Muzi, became the heir to hundreds of millions of dollars' inheritance because her parents died in a car accident. So, after they met in the diving competition, why didn't they try to impress Li Muzi? But when Li Muzi realized that a gambler could not change his nature, he wrote a divorce agreement.