According to the query of Netease Cloud Music, the edge song of Horizon was originally sung by singer Cergelen, and its album: Walking. Part of the lyrics: Hongyan started up on the lake and flew to the distant horizon. I took my steed through the snow and strolled on this grassland. It was a feast of bonfires.

China singer Cergelen published her work Walking. Cergelen's voice, flowing into the lake with a waterfall, is quiet, refreshing, appropriate and highly recognizable, as if it were born with strong contrast and penetration.