常見問題：
問：2. Q: How many members are there in Secret? 答： A: Secret originally had five members, but now consists of only four members after Song Ji-eun's departure.
問：7. Q: Has Secret released any albums? 答： A: Yes, Secret has released several albums, including "Moving in Secret," "Secret Time of the Day," and "Letter from Secret."
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。