The 'CF queen' Seolhyun was the guest on the February 3 airing of SBS's 'One Night of TV Entertainment,' on which she was asked about TWICE's Tzuyu being her rival. 

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The interviewer had asked her, "You are the queen of cutout boards but nowadays, Tzuyu is rising as your rival. Did you know?" 

Seolhyun replied, "I saw it and she looked so cute and pretty. But she's not a rival. The real rival is myself," remaining confident about her unofficial title as the 'CF queen' in the advertising world.