The world of mortals will always accompany the original song.
The original songs are Indifference and Situ Lanfang.
This song was written by Deng Kanxin, composed by Chen Wei and arranged by Niu Xia. It is included in the album Cold Love Song Perfect Lover released by Leng He Situ Lanfang in 2008 and the album Cold VS Situ Lanfang released in 2009.