BtoB Lee Chang-sub, 'This is not a sound from your hands' (M Countdowndown)

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The pre-rehearsal includes Golden Child, Gugudan, The Man Black, Mighty Mouse, MonstaX (MONSTA X), BtoB (BTOB), Seo In-young, Stray Kids (StrayKids), IZ*ONE, ATIZ, April, MXM (MXM), Wikimiki (WEKM), IMEKI), JBJ95, Chae Yeon, Kwill, TWICE (TWICE), Promis Nine, Hot Shot and Hay Girls attended.BtoB (BTOB) member Lee Chang-sub poses.

The pre-rehearsal includes Golden Child, Gugudan, The Man Black, Mighty Mouse, MonstaX (MONSTA X), BtoB (BtoB), Seo In-young, Stray Kids (StrayKids), IZ*ONE, ATIZ, April, MXM (MXM), Wikimiki (WEKM), IMEKI), JBJ95, Chae Yeon, Kwill, TWICE (TWICE), Promis Nine, Hot Shot and Hay Girls attended.

BtoB (BtoB) member Lee Chang-sub poses.