Smile, composed by Gu Yue, arranged by Han Ke, written by Zhou Ren and sung by flower girl, was released on August 26th, 2020 and included in the album Smile.

Lyrics excerpt: Look at the brightly lit bustling strip, the old man with white beard, copy it into the painting, make some pleasantries, echo the flawless moonlight, and suddenly the breeze stirs up a fallen flower. In the midsummer night market, I don't want to go home, the stars are falling, and the branches of the old tree are falling.