yàobù chī huǒguō?

Here 要不 introduces a suggestion, similar to how about..., why don’t we..., or shall we... in English.

So 要不 吃火锅？ is a casual way to suggest the idea of eating hotpot.

A useful thing to know is that 要不 often sounds:

• informal
• conversational
• friendly

It is very common in spoken Mandarin.

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.

Both can be correct.

• 吃火锅 focuses on the activity itself: eat hotpot
• 去吃火锅 explicitly includes the idea of going somewhere to eat hotpot

In casual conversation, 去 is often omitted if the situation already makes it clear.

Compare:

• 要不吃火锅？ = How about hotpot?
• 要不去吃火锅？ = How about going to eat hotpot?

The second one feels a little more explicit.

Because this is not a plain yes-no question of the statement + 吗 type.

It is a suggestion question, and Mandarin often expresses that with:

• wording like 要不
• rising intonation
• a question mark in writing

So 要不吃火锅？ is natural.

Adding 吗 here would usually sound unnatural:

• 要不吃火锅吗？ is not how people normally say this.

Yes, absolutely. In fact, 要不我们吃火锅？ is a very common full version.

It can sound slightly clearer than the shorter 要不吃火锅？ because it states the subject directly.

Natural options include:

• 要不吃火锅？
• 要不我们吃火锅？
• 我们要不吃火锅？ — possible, but often less natural unless spoken with the right rhythm or context

For most learners, 要不我们吃火锅？ is a very safe pattern to use.

It is pronounced yàobù.

Tone by tone:

• 要 = fourth tone
• 不 = fourth tone here

Why does 不 stay fourth tone?
Because 不 only changes to second tone when it comes before another fourth-tone syllable.

Here the next syllable is 吃 chī (first tone), so it stays:

• yào bù chī huǒ guō

So the full sentence is:

• yàobù chī huǒguō?

That is just how Mandarin normally expresses it.

In Chinese, 火锅 refers not only to the pot itself, but to the hotpot meal as a type of food experience. So 吃火锅 is the standard way to say eat hotpot / have hotpot.

This is similar to how English says:

• eat pizza
• have barbecue
• do brunch in some casual contexts

So even though hotpot is an experience involving cooking at the table, Mandarin still naturally uses 吃.

It is informal and conversational.

要不 is especially common in everyday spoken Mandarin among:

• friends
• family
• classmates
• coworkers in casual settings

In very formal speech, people might choose other phrasing, but for normal daily conversation this sentence sounds natural.

Yes. This is important, because 要不 does not always mean how about...

It can also mean otherwise / or else.

For example:

• 快点，要不就来不及了。
  • Hurry up, otherwise it’ll be too late.

So when you see 要不, pay attention to context:

• before a suggestion: it often means how about...
• in a warning or consequence sentence: it often means otherwise

In 要不吃火锅？, it is clearly the suggestion use.