[4] After passing the audition process, she moved to South Korea, where she became a trainee under the talent agency for five mere months.

As Gugudan kicked off the start of their fourth year, the group's number of activities began to decline drastically and they entered their unofficial hiatus era.

On April 15, Liu officially made her acting debut when Hello Debate Opponent was broadcast on Mango TV.

While taking part on the show, she revealed in an interview that the members of Gugudan had been asked to leave their dorm by the agency,[4] indicating that the group was on the brink of disbandment.

[11] BonBon Girls 303 officially debuted on August 11, with the release of their first mini album, titled The Law of Hard Candy.

[17] The group's pre-recorded online farewell event was broadcast on Tencent Video on July 24, marking the end of her journey as a BonBon Girls 303 member.

[18] Two days before BonBon Girls 303's disbandment, the short drama Night of Love with You premiered on Tencent Video on July 2.

It quickly gained a lot of following, continuously placing within the top ranks of various popularity lists alongside bigger, normal-length dramas.

On July 10, Liu was officially announced as a cast member in the drama Lady Revenger Returns from the Fire,[25] which also stars actress Xu Lu.