Lee Dong-gook's son Si-an's San-nim BAD Challenge photo

Photos and videos of Lee Dong-gook's son Si-an's San-nim BAD Challenge have been uploaded lol

Sian performed the intense BAD Challenge choreography, which is practically ATEEZ Choi San's signature.

It is really amazing and admirable to see you pull it off perfectly.

Seeing how they perfectly replicated the charismatic facial expressions and even the key points of the choreography

I can really feel how much influence and inspiration Choi San's unrivaled stage presence has on children.