The Peach Blossom Dock casting was held in the seventh installment of the third season of the variety show Fifty Kilometers to Peach Blossom Dock. In the seventh episode of the third season, Radio 650 organized a casting call in which the families of Peach Blossom Dock put their best foot forward. Among them, Wang Hedi and Wang Chuanjun enlisted Song Xi's help in choreographing a song and dance performance, and Meng Ziyi changed into a pleated skirt to sing "Peach Blossom Blossom".