"Mayfly" is composed by Hua Chenyu, and lyrics by Dai Yuedong, the song won the "Top 10 Golden Song of the Year" at the Annual Asian Song Charts Awards in 2016. The song was written at a night when Hua Chenyu locked himself in a small room.
The lyricist Yuedong, was deeply attracted into the melody like trapped into a wormhole, when he was listening to the demon. This feeling reminded him of the Mayfly.
Mayfly is one of the most primitive winged insects, with a short life span of only one day. But in this short life, it can bloom into the most brilliant glory, which make us human being realised that cherish every moment of the present, is the most important thing. The lyricist then decided to use "Mayfly" this small creature as a concept, to create this song.
When the arranger Bernard Zheng heard the demon, his first imagination was the pent-up space and loneliness before the rain, so he added more electronic sound with electronic effects of the piano, and retain the residual sound from a string.