"Little Sister Tiantiantian".

According to the query of Kugou Music, "I can't sleep" is the lyrics of the song "Little Sister Tiantiantian", sung by singer Yang Yuying, release date: 1992-09-02, lyrics: Wu Songjin, Composer: Han Chengguang.

Part of the lyrics: I can’t sleep, I can’t sleep, hey. She has sweet dimples, a sweet smile, and a sweet and pretty face. The eyebrows are curved and can talk, and the sweet little mouth is playing with cherries.