On January 24, a never-before-seen video clip titled 'NCT 2018_ARCHIVE: #0001'

was posted on SM's official YouTube Channel, featuring the NCT members and trainees practicing in the studio.

Filmed on December 22, 2017, and dressed in all black, the boys can be seen eagerly going over their moves from "Black on Black". They have some crazy footwork and this video shows why they're such talented dancers.

Meanwhile, NCT recently left for Ukraine to film their new MV.