In 2018, Shan Yichun participated in the recording of the interactive music variety show "I Want to Sing with You Season 3". In 2020, sang "Love That Never Lost Connection" on the first stage of "The Voice of China 2020" and won praise from the original singer; on November 12, participated in the theme of "Starry Sky Reading" "There are Poems and Far Away: Poems and Paintings Zhejiang Chapter" Evening party; November 17th, lead the sing of the 2022 Hangzhou Asian Games propaganda song "Asian Heroes"; November 20th, Shan Yichun won the annual championship of "The Voice of China 2020", thus entering the entertainment industry; November 25th, performance Sing the promotion song "A Love Letter to Filmmakers" from Zhang Yimou's movie "One Second"; on December 8, release the first solo single "Your Collection". On December 23, the second solo single "Photo" was released. On December 31, participated in the "Zhejiang Satellite TV 2021 New Year's Eve Party". On January 18, 2021, the third solo single "Dancing in the Night" was released.

2018年，以素人身份参与录制互动音乐综艺节目《我想和你唱第三季》 [1] 。2020年11月，单依纯获得了《中国好声音2020》年度总冠军，她也由此正式进入演艺圈 [4] ；11月25日，为张艺谋电影作品《一秒钟》演唱的推广曲《给电影人的情书》发布 [5] ；12月，其演唱的首支原唱OST歌曲《你的珍藏》、首支个人单曲《照片》相继上线 [6-7] 。2021年1月18日，发布了第二支个人单曲《在夜里跳舞》 [9] ；4月19日，发行第三支个人单曲《分身》 [26] ；8月3日，发行第四支个人单曲《喂》 [36] 。