A pivotal moment came when she delivered a speech during a class president election, and her friends found her story highly amusing.

[10] Initially hesitant to express her desire to become an actress, she eventually enrolled in the Department of Film at Konkuk University in her twenties.

In the movie, which starred Choi Won-young and Shin Hyun-tak, Kim E-jeong portrayed the character of Hee-young, a femme fatale and bar hostess.

[26] In the short film Love Triangle, directed and written by Hyung Seul-woo and produced by Cho Hyun-yeol, Kim Min-jung went by her real name.

The story revolves around people who perceive weathercasters as mere eye candy for broadcasting rather than professionals are discussing different aspects.

[29] In the same year, Kim achieved a career milestone through her supporting roles in two feature films by Hong Sang-soo, namelyYourself and Yours, followed by On the Beach at Night Alone.

Afterwards, She was promoted to the main cast in another Hong Sang-soo film titled Grass (2018), where she was credited under her new stage name Gong Min-jeung.

As their conversation continued, the atmosphere soured when they discussed a deceased mutual friend, with Mi-na insisting that both of them held some responsibility.

[34]In short film Coming of Age, Gong portrayed the character Baek-seol, a 29-year-old college student residing in Seoul who finds herself at a crossroads after failing to secure a full-time job.

[20][35] In the short film "I Should Have Killed That Bastard" by Director Lee Ga-hong, Gong acted alongside Lim Seong-mi, Kim Ye-eun, and Jeong Soo-ji.

[37] Gong portrayed Gyeong-ran, the best friend of Eun-seo (Lee Yoo-young), in Director Park Je-beom's independent film "I Am Home."

The director was deeply moved by Gong's audition, remarking that her performance was exceptional and she couldn't envision any other actor in the role.

[43][41] In the omnibus film "Midday Picnic," Gong appeared in the third part titled "Call Me If You Need Me," directed by Lim Oh-jeong.

The storyline revolves around Choi Young-shin (portrayed by Gong Min-jeung), who leaves her home after a disagreement with her husband and unexpectedly visits the house of Woo-hee (played by Lee Woo-jeong), a freelance designer in her 30s who lives alone.

As part of the event, the exhibition showcased three short films by Gong on 19 November: "The Taste of Dad" (Kim In-seon, 2014), "Coming of Age Ceremony" (Oh Jeong-min, 2018), and "Two Waters and a Lighter" (Cho Hee-young, 2019).

[47] Gong played the role of Geum-hee, the third daughter, in Jeong Seung-oh's debut feature film, Move the Grave.

The movie presents a unique blend of dark humor and horror as it unfolds the story of five siblings and the elders in their family, in a dispute over relocating their father's grave.

[48][17][49] Move the Grave received widespread recognition, earning the CGV Arthouse Award at the Jeonju International Film Festival and the Grand Prize in the New Director Competition.

Gong's vibrant and captivating performances have established her as an acclaimed actress, celebrated for her talent and powerful on-screen presence.

Directed by Jang Hyun-sang and produced by GATE6, it is a comical action-adventure film depicting the struggles of the three musketeers Jin-seon (Gong Min-jeong), Hyuna (Lee Min-ji), and Ga-yeon (Park So-jin) to save a village devastated by the zombie virus.

[4][5] Her next work drama Sweet Munchies is a romantic comedy written by writer Park Seung-hye and producer Song Ji-won, and Gong played the role Yoo Sung-eun, a freelancer broadcasting scriptwriter.

The featured films encompassed titles such as Everyone Wants to Die by My Name (2012), Yourself and Yours (2016), Grass (2017), Kim Ji-young: Born 1982 (2019), Move the Grave (2019), Call Me If You Need Me (2018), Allergy (2015), Two Waters and a Lighter (2020), A Familiar Taste (2014), The Distance Between Us (2016), Coming-of-age (2018), I Should Have Killed the Bastard (2018), and recommendations from Gong include Blue Valentine (2010) and American Honey (2016).

As the protagonist, she embarks on a tranquil and solitary journey, wandering between the Daegu Dyeing Industrial Complex and a fishing village in Gangwon-do.

Along the way, she encounters various individuals briefly, including her former lover, a grandmother with a broken radio, a middle-aged woman at a guesthouse, and a male student on a bicycle.

In the show, Gong took on the role of Pyo Mi-seon, a dental hygienist and a friend of Yoon Hye-jin (played by Shin Min-a), a dentist who relocates to Gongjin.

Gong expressed her dedication to the role, mentioning that she made an effort to fully immerse herself as Hye-jin's best friend and as a resident of Gongjin.

The exhibition showcased five films featuring Gong, including Family Portrait and I Should Have Killed That Bastard, both directed by Kim Hye-jun.

[65] In 2022, Gong acted in tvN drama series Little Woman as a reporter at YBC news agency named Jang Ma-ri.

This project was the second campaign film of Indieplex Season 4 and was released simultaneously on 17 July on the Indieground and the Marie Claire Korea YouTube channels.

[80] According to a news report on 16 August 2024, Gong Min-jeong and Jang Jae-ho were set to get married in early September in Seoul.