
The filming started in Vietnam on October 22. On October 20, Hui was cast for One Night Food Trip alongside his label mate Yoo Seon-ho. It is a pilot music variety show where well-known singer-songwriters would be competing on music charts. On September 19, it was revealed that Hui participated in a new show called Hyena on the Keyboard. 1 on real-time charts of Melon, Mnet, Bugs, Genie, Soribada, and Naver. Both songs achieved an all-kill on Instiz, charting at No. In 2017, Hui co-composed the Produce 101 Season 2 hit song, " Never" and Wanna One's debut single, " Energetic" alongside Flow Blow which won by public votes on which song they'd like to see for the group's debut single. The group debuted on May 1 with the EP 199X and title track "365 Fresh". On April 4, 2017, Cube Entertainment announced that he would participate in a project group called Triple H alongside Hyuna and E'dawn and that they would star in a reality show called Triple H Fun Agency. On October 10, 2016, Hui made his official debut as a member of Pentagon through 2016 Mnet's reality show Pentagon Maker and becoming the leader of the group.

Main articles: Pentagon (South Korean band) and Triple H (band) 2016–2019: Debut with Pentagon and solo activities The group wasn't supposed to consist of them, but after the three recorded the guide, Cube's Artist Development team decided to release it. They released a remake of Lee Won-jin and Ryu Keum-deok's 1994 classic "For All the New Lovers". In February 2015, Hui was part of a vocal project group, Seorin-dong Children (서린동 아이들) with Jinho and another female singer.

Hui spent about six years as a trainee before debuting with Pentagon. He also appeared in Rain's "Rain Effect" as a trainee, and received advice from Rain about debut. In 2014, Hui appeared in G.NA’s "Secret" music video and promotional activities. In December 2013, Hui danced at the KBS Festival and danced to the special stage of Son Dong-woon and Kwon So-hyun. In an open audition in 2013, after leaving JYP, he was the only participant selected by all three entertainment agencies (Cube, Sonic Music and Nega Network). He failed to make the cut into Chinese Idol as he was placed 60th and immediately dropped out from the show. In 2013, Hui was preparing to debut in China. In 2010, he won first place on Best Male Vocal at JYP 7th Audition Final Round. Hui used to be a JYP trainee before joining Cube Entertainment. He lived in Beijing, China for eight months before joining Cube in 2013. On Comedian Singer Producer, Hui confessed that he was rejected from Hanyang University. In 2012, Hui graduated from Modern K Academy.

Hui was born on August 28, 1993, in Gwacheon, Gyeonggi-do Province, South Korea. During a stay in China, he discovered local people pronounce the first syllable of his name, Hoe/Hwe, as “Hui/Hwee”, which inspired his decision. 3.3 2020–present: Super Five and musical debutĪt Pentagon's debut showcase, Hui explained the meaning behind his name: believing Lee Hoe-taek, his real name, is difficult to pronounce (particularly for foreigners), he settled on Hui as a mononym.3.2 2016–2019: Debut with Pentagon and solo activities.Special performance appearances by Kim Dong-myung (Boohwal), Woogie Special voice appearance through phone by Kim Shin-young Special appearances by Royal Dive, Mirror Boy (producer), Park Jin-young, Got7 ( Jinyoung, Youngjae, Yugyeom), the rest of Mamamoo Special appearances by Woogie (producer from H1GHR Music), Kim Kyung-ho, Park Wan-kyu, Park Jin-young Got7 (Youngjae, Yugyeom), Royal Dive (producer duo) Special appearances by BtoB ( Eunkwang, Changsub, Sungjae), Gye Min-ah ( Fantastic Duo winner), Esther Kim (Top 6 in K-pop Star 4), LX (rapper), 1stSON (rapper), Lee Won-woo (choreographer), Park Jin-young, Got7 ( Youngjae, Yugyeom) Special appearances by the rest of BtoB, Hong Jin-young, Hani ( EXID) Special performance appearance by Yun Ddan Ddan Special voice appearance through phone by Lucid Fall Special appearances by Pentagon (Hui, Kino)

Sleepy, Loco, Hoody, Jung Seung-hwan, Jo Woo-chan
