According to Netease Cloud Music, Pan Qianqian originally sang Song of Desert Wind, which was released on March 19, 2020 and included in the album Song of Desert Wind of the same name.
Lyrics of Desert Wind Song: The sky is bleak. People who walk on the yellow sand dry the tears in the world of mortals, smile with a flute and sword, look around endlessly, lose their souls, drink bonfires intoxicated and make a lifelong promise.