Questions & Answers about yàobù chī huǒguō?
Not exactly.
要不要 usually means want or not want / do or not do, and often forms a yes-no question:
- 你要不要吃火锅? = Do you want to eat hotpot?
要不 in this sentence is more like a suggestion marker:
- 要不吃火锅? = How about eating hotpot?
They are related in feel, and learners sometimes mix them up, but they are not interchangeable in every sentence.
Chinese often leaves out the subject when it is obvious from context.
In a situation like friends deciding what to eat, 我们 is understood:
- 要不吃火锅?
- full version: 要不我们吃火锅?
Both are natural, but the shorter version is very common in conversation.
Chinese drops information that both speakers already know much more freely than English does.