While still in training, the group flew to China where they appeared in numerous variety shows performing dance routines and songs to showcase their talent to the Chinese audience.

[7][8] On June 24, 2015, it was announced that Wonder Girls would be making comeback after two-year hiatus, as a four-member band.

In July of the same year, she also contributed to the composition of two songs on Wonder Girls' single EP Why So Lonely.

The group released their final single "Draw Me" on February 10; it also serves as a celebration for their 10th anniversary since debut.

[14][15] In 2017, Hyerim began majoring in Interpretation in Hankuk University of Foreign Studies, under the school's Department of English for International Conferences and Communication (EICC).

[16] In February 2018, she was honored with a certificate from the Ministry of Foreign Affairs for creating a voluntary video on safety in traveling overseas.

[17] She helped translate The Diary of a Young Girl by Anne Frank from English to Korean for its publication in South Korea.