常見問題：
問：6. Q: What is Secret's most popular song? 答： A: Secret's most popular song is "Poison," which was released in 2014 and became a huge hit in South Korea.
問：10. Q: Are Secret still active as a group? 答： A: Yes, Secret is still active as a group, with the remaining members continuing to release music and participate in various activities.
問：冰桶挑戰的起源是什麼？ 答：冰桶挑戰最早起源於2014年，由前棒球運動員皮特·弗蘭斯（Pete Frates）等人發起，目的是為了提高對ALS的認識和籌款。