Broadcasted on June 21, MBC Every 1's 'Weekly Idol' welcomed Seventeen to the show where the boys showed off their talented dancing skills.

The MCs began, "It's been a year and 7 months since your last appearance. You've progressed a lot since then."  Seventeen responded, "Before we even made our debut in Japan, our Korean album was number one on the Oricon chart."

The boys took on the random play dance challenge.  Though it started off a bit shaky, they managed to succeed in the end, giving them the opportunity to performance 2x fast to "Don't Wanna Cry."

As soon as the music cued, the members shuffled around dancing in perfect synchronization, amazing the MCs.  "Wow!" "Yeah!" they exclaimed, rather impressed by idol group's performance.

Watch the jaw-dropping performances above and below!