1. "Reverse War" is a song sung for Tencent Games' gun-fighting online game "Reverse War". It was written by Pei Yu, composed and arranged by Qu Shicong, and sung by Zhang Jie. It was included in Zhang Jie's album released in 2012 "One Chance New Song + Selection" was first sung at Tencent Games' 2012 Annual Conference on March 21, 2012. The MV was directed by Zhou Jun and premiered on September 3, 2012.

2. "Calories" is a song sung by Rocket Girls 101. It was written by Li Cong and composed by Akiyama Sayuri. It is also an episode of the movie "The Richest Man in Xihong City" and was released on July 26, 2018.

The creative background of "Calorie"

Li Cong, the lyricist, said that the reason why the song is called "Calorie" is because the word "calorie" sounds very jumpy when pronounced. Very magical. This state of "I want to eat again, but I still work hard" is a common psychological reflection that everyone will have. But the mood of ordinary people who need to lose weight and the state of hard work are a point of convergence between the song and the singer.

Because the lyrics are very tightly arranged, the members of Rocket Girls 101 will feel out of breath during the recording, but this feeling is very consistent with the content of the song and also reflects everyone in the group. characteristics and tone of singing, so Peng Fei retained this feeling as much as possible when arranging the music. In this song, Rocket Girls 101 express more of their naughty and lively side.