According to the introduction of QQ music, the song "I miss you so long" was originally sung by Qilong, and "I miss you so long" was composed and performed by Qilong, and was included in the album "I Love You Forever", which was released on 201219.
Lyrics fragment: I have waited for you for so long, but I can't see you turning back. How many people want you to cry day and night, and look forward to how much sorrow you have. I missed you for too long, so I went to Qiu Lai in the spring and flew away.