In 2018, Liu rose to stardom by his covers on platforms YY's Live Streaming and Douyin, and released his solo debut single "Imagination" on September 15, 2018.

Unwilling to abandon his initial dream of pursuing music, Liu used his first month's salary as a chef to buy a guitar.

In 2014, Liu formed Modern Brothers band with A Zhuo and Da Fei, and joined the YY's live streaming platform in March 2015 where they covered dozens of songs.

In 2017 he moved his band's live streaming stage from indoors to outdoors, to a historical street market in his hometown, Dandong.

Liu Yuning and the Modern Brothers band had a phenomenal rise to stardom after 3 years of live streaming (singing) on the YY platform.

[11] On August 17, Liu and Modern Brothers held their first offline singing club event at the exhibition center of Guangzhou Central Station.

[12] Liu landed his first drama acting role in the TV Series Hot-Blooded Youth starring Huang Zitao and Zhang Xueying which was filmed from early September and aired in the later part of 2019.

Among them, the popular ones are "Toast the wine" (让酒) for Tomb of the sea (沙海) and the theme song for Jia Zhangke's film Ash Is Purest White.

[citation needed] In summer of 2022, the theme song "Looking for you" for popular TV series "Love Between Fairy and Devil" won him 4 consecutive champions in TenCent Music Billboard.

[citation needed] Even though he has debuted as a singer and actor, Liu still does regular livestream on his Weibo page that can lasts 2 ~ 5 hours.

He mostly does live performances without his band members too as they're now focusing on family business, but the group hasn't disbanded and they're still close to each other, hence his self-introduction will always be "Modern Brother's Liu Yuning.

"[citation needed] On March 27, 2023, paparazzi and blogger YangYang broke the news that Liu had been married in April 2012, got divorced in December 2013.

Liu also scolded the paparazzi for exposing the pictures of his ex-wife and her little child, who is not related to him, to the public eye, calling the act inhumane.

[23] Promise was also soundtrack for Line Walker 2: Invisible Spy Most Popular EP, 2021 at Chinese Top Ten Music Awards Date (全世界最好的你) (要替我幸福) (暖暖, 請多指教) Huang Xiaoming, Lin Shuwei, Zhang Liang, Zhao Liying, Li Haofei.

Originally scheduled for 7 shows, on January 22, 2020, Liu Yuning announced on his personal Weibo that the concert in Wuhan will be postponed due to severe COVID-19 epidemic and to ensure everyone's health and safety.