How do you say I not speak Chinese?

Here are a few ways to say "I don't speak Chinese" in Mandarin, depending on the level of formality:

Formal:

* 我不会说中文。 (Wǒ bù huì shuō zhōngwén.) This is the most literal and formal way to say it. It means "I don't know how to speak Chinese."

Informal:

* 我不会说中文。 (Wǒ bù huì shuō zhōngwén.) This is the same as the formal version but can be used in informal situations as well.

* 我不会说中文。 (Wǒ bù huì shuō zhōngwén.) This is another informal version, using a more casual tone.

To express a complete lack of understanding:

* 我听不懂中文。 (Wǒ tīng bù dǒng zhōngwén.) This means "I don't understand Chinese."

To be polite:

* 我的中文不好。 (Wǒ de zhōngwén bù hǎo.) This means "My Chinese is not good." It's a gentler way to say you don't speak the language well.

In situations where you are asked if you speak Chinese:

* 不会。 (Bù huì.) This means "No." It's a very short and direct answer.

* 一点点。 (Yī diǎn diǎn.) This means "A little bit." You can use this to indicate you have some basic understanding.

Remember to use the appropriate tone and gestures depending on the context.

You can also add a gesture like shaking your head to emphasize that you don't speak Chinese.