"The Turbulent Heart".
According to the query on Kugou Music Network, "The Turbulent Heart" was sung by Li Hecong, with lyrics and music by Liang Hongzhi. Excerpt from the lyrics: I once thought that my home was like a ticket stub. After tearing it open, I started the journey and plunged into another stranger. How many days have I been wandering like this, how many years have I been lonely, and the end point has returned to the starting point. I only realized it now.