September 07, 2012 09:32 PM EDT
H.O.T Jang Woo Hyuk Receives Cake for 16 Year Anniversary / Credit: d
On his twitter he wrote, "Congrats to H.O.T for their 16 year anniversary! Congrats to Kangta, Heejun, Tony, Jaewon and Woo Hyuk!" along with a picture.
In the picture, their is a group picture from their first album and the date of their debut. They debuted in 1996 on September 7.
Internet users commented, "I wish they held a anniversary concert" and "Wow! Already 16 years?"