"Nuan Nuan".

After checking NetEase Cloud Music, we can see that the title of the melody of the swinging train is "Nuan Nuan", and the lyrics are: You can do whatever you want. I am willing to do whatever you say. The melody of the swinging train can be anything. It's true.

"Nuan Nuan" is a song sung by Malaysian popular female singer Leong Jingru, with lyrics written by Li Zhuoxiong and music composed by artificial satellite. It is included in the 8th album "Kiss" released by Leong Jingru on October 6, 2006. , is one of Liang Jingru’s representative works of sweet love songs.