How do you say oh no in Chinese?

In Chinese, "oh no" can be translated as "哦不" (ò bù) or "糟糕" (zāo gāo). These expressions are commonly used to convey a sense of concern, disappointment, or worry in response to a negative situation. The choice of which expression to use may depend on the context and the speaker's preference for a more literal or idiomatic expression.