U-know Yunho

 Name: Jung Yunho
Stage Name : U-Know Yunho
Born : 6 February1986
Height : 184 cm
Weight : 66kg
Blood Type : A-
Hobbies: Music, appreciation, sport and Composing
Position : Vocal
Specialty : Singing, dance and sport

Jung Yunho (born February 6, 1986), better known by his stage names, U-Know, U-Know Yunho . He is a Korean singer and occasional actor. He is the leader of the South Korean boyband DBSK. He was born and raised in Gwangju, South Korea. He has a younger sister, Jung Ji-hye. At the age of thirteen he joined SM Entertainment, after winning a dance competition. Before debuting in 2003, Yunho appeared in label-mate Dana's music video for her song "Diamond" as a backup dancer and rapper. He has said he chose his stage name to be U-Know because as the leader of the group, he wants to understand everybody as in "I know you."

For The 2nd Asia Tour Concert 'O', Yunho performed his self-composed song Spokesman. He and band-mate Micky are also featured rappers in "Heartquake" from Super Junior's Third Album, Sorry, Sorry . For the Tohoshinki 4th Live Tour 2009: The Secret Code in Tokyo Dome, U-know performed his self-composed song Checkmate in Japanese

Yunho has appeared on two televised shows with DBSK, Banjun Theater and Vacation. In 2006, U-know made an appearance guest in Rainbow Romance. In July of 2009, Jung was cast in the MBC miniseries "Heading to the Ground".

Cyanoacrylate drink incident

While the group was filming a variety show on October 14, 2006, U-Know was rushed to the hospital after drinking a beverage, which was laced with super glue, that had been given to him by an anti-fan. His manager quickly instructed him to vomit right afterward. The anti-fan turned herself in the next day. The female suspect, whose surname is Ko, was apprehended on October 16, was a member of an anti-DBSK website for over two years. Ko wrote a letter to U-Know:

To, Jung Yunho You watch your mouth!! Ever since the debut you were so stuck up. You won't last after a couple years... You would be forever seen as some teen idol not real singer. Do you know your limit? Only little kids like you!... I really want to kill you.

U-Know, who has a younger sister the same age as the culprit, contacted the police and requested that they not press charges against Ko in spite of the potentially severe consequences of what she did. He mentioned on a television show a while after he had recovered that the entire event "affected [him] more mentally than physically".  There were many unanswered questions, such as why U-know drank from the open container, and how the culprit managed to enter the building of the broadcasting station

credit : official website and wikipedia