Renjun was a worldwide K-Pop idol part of the group NCT Dream, which consisted of Mark, Renjun himself, Jeno, Jaemin, Haechan, Chenle and Jisung

Renjun wasn't the most active member in the group, but when he does get an offer, it would always be a busy day, being brand ambassadors of many companies, modeling, and modeling as well

His health was always at risk, but his agency always pushed him until he was in pain or he got sick. Of course, one day he was sick and he had to stay at the hospital