YUHNO, secured his spot in TVXQ through a dance competition. He was the second m… Read Full Bio ↴YUHNO, secured his spot in TVXQ through a dance competition. He was the second member to join TOHOSHINKI. Prior to this, he accumulated some musical experience as a rapper and backup dancer for K-pop singer Dana in her Diamond video. His chosen stage name is U-know YunHo, because when you say YunHo really fast it sounds like "You know" in English. He is the second oldest member in THSK and is also the band's leader.

He began to dance in 7th grade where he made a dance team at his school and took them to a competition. During the depression, Jung YunHo's family's business was not doing very well and so he moved away from home and took many small jobs to support his sister's education. At the time he was in 9th grade and due to this, he often slept under the bridge of a train station. At this time he auditioned for SM Entertainment and was accepted.

On October 15, 2006 he was hospitalized after being poisoned by an anti-fan who gave him a drink mixed with superglue. He was rushed to the hospital and eventually recovered, though he was weak for some time. No charges were pressed against the anti-fan because YunHo did not want to punish someone the same age as his sister.