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.
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Internet users commented, "I wish they held a anniversary concert" and "Wow! Already 16 years?"