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：冰桶挑戰對環境有影響嗎？ 答：由於冰桶挑戰需要大量的水，一些人擔心這可能對環境造成負面影響。然而，大多數參與者都會選擇將水回收再利用，減少浪費。