From April 3 to 6, 2021, RubberBand held the Ciao 2021 concert at the Hong Kong Coliseum for four consecutive days. Many of the band's classic songs, such as Guo Huo, "Song Against the Current," "Discovery," "You and Me" and "See You in the Future," were newly rearranged for the tour. Patrick Lui Jazz Orchestra and a cappella group AMuiXis were also invited to perform, creating new musical sparks for the concert. RubberBand especially wrote the new song Ciao to reflect the tour's theme of separation and reunion.