Definition
An expression used to convey surprise, often with a touch of exaggeration.
哄！
Well, I declare, that's quite surprising!
哎呀，这真是令人惊讶！
I declare, it's unbelievable that she resigned.
哎呀，她辞职了真是令人难以置信。
I declare, this cake is absolutely delicious!
哎呀，这个蛋糕真是太好吃了！