Hun snakker kinesisk.

Because snakker is a finite verb here, not an infinitive.

In Norwegian, the basic infinitive is å snakke = to speak.
But in a normal present-tense sentence, you use the conjugated form:

• å snakke = to speak
• snakker = speak / speaks / am speaking / is speaking, depending on context

So:

• Hun snakker kinesisk. = She speaks Chinese.

In Norwegian, verbs usually do not change according to the subject the way they do in English.

So you get:

• jeg snakker = I speak
• du snakker = you speak
• hun snakker = she speaks
• vi snakker = we speak

The verb stays snakker for all persons in the present tense.

In Norwegian, names of languages and nationalities are usually not capitalized, unlike in English.

So Norwegian writes:

• engelsk = English
• norsk = Norwegian
• kinesisk = Chinese

That is why you write:

• Hun snakker kinesisk.

not Hun snakker Kinesisk.

Here, kinesisk functions as the name of the language, so it is being used in a way English also sometimes does with words like French or Chinese.

In Norwegian, many language names look the same as adjectives:

• et kinesisk ord = a Chinese word
• Hun snakker kinesisk. = She speaks Chinese.

So in this sentence, kinesisk means the Chinese language, even though there is no separate word like language written.

When talking about speaking a language, Norwegian normally uses just the language name by itself.

So you say:

• snakke norsk = speak Norwegian
• snakke engelsk = speak English
• snakke kinesisk = speak Chinese

You do not normally add an article here.

Yes, in this simple sentence it is.

The order is:

• Hun = subject
• snakker = verb
• kinesisk = object/complement

So it follows the basic Subject + Verb + Object/Complement pattern:

• Hun snakker kinesisk.
• She speaks Chinese.

A rough English-friendly guide is:

• Hun ≈ hoon (but with a Norwegian u sound, not exactly English oo)
• snakker ≈ SNAHk-er
• kinesisk ≈ shi-NEE-sisk or ki-NEE-sisk, depending on accent and how precise you want to be

A few helpful notes:

• u in hun is not exactly like the English vowel in moon
• kk in snakker shows a short vowel before it
• the stress in kinesisk is usually on -ne-

Exact pronunciation varies a bit by dialect.

Hun means she.

It is the third-person singular pronoun used for a female person:

• Hun snakker kinesisk. = She speaks Chinese.

Compare:

• han = he
• hun = she
• de = they

Yes. Norwegian present tense can often cover both:

• speaks
• is speaking

So Hun snakker kinesisk can mean:

• She speaks Chinese
  or, depending on context,
• She is speaking Chinese

If you want to make the ongoing meaning especially clear, context usually does the job.

You usually put ikke after the verb in a main clause:

• Hun snakker ikke kinesisk. = She does not speak Chinese.

That is a very common Norwegian word order pattern:

• subject + verb + ikke
  • rest

In a yes/no question, Norwegian usually puts the verb first:

• Snakker hun kinesisk? = Does she speak Chinese?

So the statement:

• Hun snakker kinesisk.

becomes:

• Snakker hun kinesisk?

This is a very important Norwegian pattern.

No. Hun snakker kinesisk only means that she speaks Chinese.

If you want to say She is Chinese, you would say:

• Hun er kinesisk.

So compare:

• Hun snakker kinesisk. = She speaks Chinese.
• Hun er kinesisk. = She is Chinese.

This sentence is standard Bokmål and is also fully natural Norwegian.

In Nynorsk, you would more often see:

• Ho snakkar kinesisk.

So the main differences are:

• hun → ho
• snakker → snakkar