Actor Jang Geun Suk is currently active as a mentor on 'Produce 101' and had some stern words to say on February 5.�

Behind footage of the girls' "Pick Me" stage on 'M! Countdown' aired this day. �After their performance, Jang Geun Suk revealed that a portion of the trainees have dropped from the show, so he left these words of wisdom.

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He said, "There are trainees who have great desire but they have no talent. �On the other hand, I heard there were trainees whose desire do not show right now. �Those trainees have no thoughts on going for the dream of being a girl group that represents the nation. �If so, leave."