"Nán Běijí Xīng Vol. 1" is an album featuring Luo Tianyi, Yuezheng Ling, and Xingchen's vocals. It contains four trio tracks and four instrumentals: Two are new songs while two others are self covers. It is Quadimension's second album series.
The crossfade could be heard from bilibili.
It could be purchased from taobao.