During a recent special broadcast of YOUKU's 'Street Dance of China' season 4, former Super Junior members Hangeng and Henry got up to try to recall the dance moves to Super Junior-M's "Super Girl" and Super Junior's "Sorry, Sorry"!

The impromptu attempt also excited the other 'Street Dance of China' captains, EXO's Lay and Wang Yibo, Lay being a direct fellow SM Entertainment-born idol and Yibo being a former K-Pop idol himself. 

But as you can see in the video clip above, Hangeng and Henry just couldn't get their memories to work on the spot! Henry even commented, "We haven't danced to this in 10 years!"

Meanwhile, Hangeng, Henry, Lay, and Wang Yibo are currently starring as the captains of the Chinese dance competition program 'Street Dance of China 4'.