In 2011, he was a contestant of Teen Superstar, under the stage name TNT. In 2013, he was cast into SM Entertainment through SM's Global Audition 2013 in Bangkok. On December 23, 2013, he was introduced as a member of the pre-debut trainee team SMROOKIES. In 2014, Ten and other future NCT members participated on the show Exo 90:2014, remaking K-pop songs from the 90s.
On February 26, 2018, he took part in the NCT U song, "Baby Don't Stop", alongside Taeyong. On March 14, 2018, Ten took part in NCT's first studio album, NCT 2018 Empathy, and appeared in the "Black On Black" music video as part of NCT 2018. On April 6, 2018, Ten released the single "New Heroes" for the STATION Season 2.
2018–2019: WayV, SuperM
On December 31, 2018, it was revealed that he was a member of NCT's Chinese sub-unit, WayV which debuted on January 17, 2019, with the digital EP, The Vision.