Pre-debut Hwang was a television actor, having played roles in
MBC's 2006 comedy sitcom
Unstoppable High Kick, and then in
KBS2's 2008 teen drama
Jungle Fish. The latter won a number of awards, including the
Peabody Award. In 2006, Hwang was among the dozen finalists to compete in
JYP Entertainment's audition program
Superstar Survival, where he would meet future bandmates
Junho and
Taecyeon. He was offered a trainee contract despite being eliminated.
Music career In 2008, he participated in
Mnet's
Hot Blood Men, a program that chronicles the rigorous training of thirteen aspiring trainees, all vying for a coveted spot in the boy band
One Day. This initiative ultimately led to the formation of two distinct boy bands, namely
2AM and
2PM. Half a year following the televised airing of
Hot Blood Men, the group
2PM made their debut with the release of their inaugural single
"10 Out of 10" from their first single album titled
Hottest Time of the Day. However, it was their second single album,
2:00PM Time For Change, that propelled them to mainstream success in Korean music, solidifying their meteoric rise. As of 2021, the group has released seven studio albums in Korea and five studio albums in Japan. Hwang has written and composed several songs for the group. On May 23, 2018, Hwang made his solo debut as a singer with his first Japanese EP titled
Complex. That same month, Hwang began his first solo concert tour, Complex, with shows in Osaka and Tokyo. He held two more fan meetings in South Korea titled Too Much Chanformation on June 1, 2019. In 2023, Hwang held a series of fan meetings titled CSBS in Osaka and Tokyo. In 2024, he held a series of fan meetings titled Chanie's Bear Museum in Tokyo and Seoul. On April 24, 2024, almost six years after
Complex, Hwang collaborated with
2AM's
Lee Chang-min and Japanese hip-hop artist
AK-69 on the Japanese single "Into the Fire", which was also used as the theme song for the anime television series adaptation of
Re:Monster. On December 4, 2024, Hwang released another Japanese single titled
Korekara No Kimi No Tameni (これからの君のために; For You, In the Future). The album featured a track of the same name, which was used as the theme song for a Japanese drama Hwang starred in,
Jun Kissa Inyeon, as well as the track "My Everything". On August 26, 2025, Hwang released his first Chinese single, "Withdrawal Symptoms of Longing" (思念戒断反应), exclusively on
Douyin's music app Soda Music, before being released on other music platforms on August 30. On October 29, 2025, Hwang released his first Japanese studio album titled
Dawn, which included his Japanese singles from 2024 and a title track featuring his bandmate
Jun. K titled "Amaku Setsunaku Tsuyoku" (甘く 切なく 強く; Sweet, Sad, Strong), which was pre-released digitally on October 24. In conjunction with his first studio album, he held a series of solo concerts in Japan titled Dawn ~The First Step~ from November 2–5 and on December 11.
Acting career '', 2014 In 2011, Hwang continued his acting career with the role of Jack in the Japanese drama
Kaitō Royale. In 2013, Hwang played the supporting role of Gong Do-ha in a spy romantic comedy series,
7th Grade Civil Servant. The same year, Hwang took on the role of newbie gangster Hyeong-ju in
Votre Noir. In 2016, Hwang was cast in the romantic-comedy drama
My Horrible Boss as Nam Bong-gi. In 2017, he was cast for a special cameo appearance as Eun Bong Hee's (
Nam Ji Hyun) ex-boyfriend in SBS drama
Suspicious Partner, and he appeared in KBS2's drama
Queen for Seven Days as Seo No, the bodyguard and friend of Lee Yeok (
Yeon Woo Jin). and the musical
Altar Boyz in Japan, in which Hwang played the role of the band's leader Matthew. In 2018, Hwang starred in the
tvN drama ''
What's Wrong with Secretary Kim and was awarded the Hallyu Star Award and Male Excellence Award at the 11th Korea Drama Awards for his work. In addition, he made his musical debut in Korea with the role of Hae in Smoke''. On February 7, 2020, Hwang starred in the Netflix series
My Holo Love. On April 30, 2021, Hwang's drama
So I Married the Anti-fan premiered on
Naver TV, with simultaneous broadcast through
V Live and global platforms
iQIYI,
Viki and
Amazon Prime Video in Japan. The drama was originally filmed in 2018 and was based on the 2010 novel
So I Married The Anti-Fan, which was also adapted into a
webtoon and a Chinese film. Also in 2021, Hwang and his bandmate
Nichkhun made special cameo appearances in
Vincenzo to support their bandmate
Taecyeon, who played a main role in the series. In November of that year, Hwang's drama ''
Show Window: The Queen's House'' began airing. In 2023, Hwang played the role of Noh Joo-wan in the drama
True to Love. In 2026, Hwang played the villainous supporting role of Yun Tae-geom, a dishonorably discharged sergeant skilled at martial arts, in the second season of
Netflix action drama
Bloodhounds. From 2013 to 2014, he appeared on the show
Our Neighborhood Arts and Physical Education for the badminton series of episodes with his bandmate
Nichkhun and for the taekwondo series of episodes. In 2025, Chansung appeared with his bandmate Nichkhun on the second season of the golfing show
To Die For. From 2014 to 2015, Chansung was cast on Chinese variety programs. He was paired with Chinese actress
Liu Yan in the first season of the celebrity dating show
Perhaps Love in 2014. In 2015, he was cast for the Chinese variety show ''Let's Go Together!'', which frequently brought Korean and Chinese celebrities as guests.
Other activities On June 1, 2012, JYP Entertainment announced through their official Twitter that Hwang would be opening a fitness center located in
Nonhyeon-dong, Seoul with his weight trainer, Hwang Mo. On December 15, 2021, Hwang announced that he would be ending his contract with
JYP Entertainment in January 2022. On March 3, 2022, Hwang signed an exclusive contract with L' July Entertainment. On October 10, 2023, it was announced that Hwang had signed an exclusive contract with HIAN Inc. to manage his activities within Japan. In August 2022, Hwang opened a YouTube cooking channel called "I Approve of This Dish". In 2023, his YouTube cooking series was broadcast in nine countries across East and Southeast Asia on
tvN Asia. In 2024, it was also broadcast on Japanese streaming service
Rakuten TV. In December 2022, Hwang held his first solo photo exhibition titled "Nahc Nahc" at the exhibition hall on the 3rd floor of AK Plaza in Hongdae from January 6–12, 2023. ==Personal life==