wǎn'ān.

It has two syllables:

• wǎn — third tone
• ān — first tone

A natural approximation for English speakers is:

• wǎn ≈ wahn with a dipping tone
• ān ≈ ahn said high and steady

A few pronunciation tips:

• In wǎn, the -an is closer to ahn than the an in man.
• The w is a normal English w sound.
• The third tone in real speech often sounds like a low tone rather than a full dramatic dip-rise, especially in short phrases.

So 晚安 often sounds like a low wǎn + high ān.

The apostrophe separates the syllables in pinyin.

Without it, wanan could be a little harder to read correctly at first glance. Writing wǎn’ān makes it clear that this is:

• wǎn
  • ān

In pinyin, apostrophes are often used when the next syllable begins with a, o, or e, to prevent confusion.

So the apostrophe is a spelling aid in pinyin only. It is not a pause in speech, and it does not appear in Chinese characters.

No. The tones stay the same:

• 晚 = third tone
• 安 = first tone

So it remains wǎn’ān.

There is no special tone sandhi here beyond the normal way native speakers shorten or smooth tones in natural speech.

It is usually more like a goodbye for the night than a general evening greeting.

You say 晚安 when:

• someone is going to sleep
• you are ending a conversation at night
• you want to wish someone a good night

You usually do not use 晚安 the same way English speakers sometimes casually say good evening.

So if you meet someone in the evening, 晚安 is often not the first thing you say. It is more common when parting.

This is a very common question.

• 晚安 = good night
• 晚上好 = good evening

But in real life:

• 晚安 is common and natural
• 晚上好 is much less common in everyday conversation

晚上好 can sound formal, staged, or like something used by a host, announcer, or in a speech. In ordinary daily life, people usually greet each other in other ways instead of saying 晚上好.

So if you want to say good night, use 晚安. If you want to greet someone in the evening, context matters, and Chinese often does not mirror English greeting habits exactly.

Yes, generally you can say it to:

• friends
• family
• classmates
• coworkers
• a romantic partner

It is polite and normal.

That said, in some situations 晚安 can feel a little warm or caring, especially in one-to-one chats late at night. For example, sending 晚安 in a text message can sometimes feel slightly affectionate, depending on the relationship and context.

Still, it is not inherently romantic. It is perfectly normal in ordinary situations too.

Usually, no. 晚安 by itself is complete and natural.

You can say:

• 晚安。 — perfectly normal
• 你晚安。 — possible, but less common
• 您晚安。 — polite, but not something people say very often in casual life

In most cases, just 晚安 is the most natural choice.

You might also hear expanded versions such as:

• 晚安，早点休息。 — Good night, rest early.
• 晚安，做个好梦。 — Good night, have a nice dream.

Yes, very common.

People often send 晚安 in:

• text messages
• WeChat chats
• social media comments
• voice messages

It is one of the most common nighttime messages in Chinese.

In texting, people may also make it softer or cuter with extra particles or emojis, such as:

• 晚安啦
• 晚安喔
• 晚安～

These versions are more casual and expressive than plain 晚安.

Literally:

• 晚 = late; evening
• 安 = peaceful; safe; calm

So the expression has the sense of wishing someone a peaceful night.

This kind of literal breakdown can help you remember it, even though in actual use you should understand it as the set phrase good night.

Usually not.

Use 晚安 when the interaction is ending for the night, especially when someone is about to sleep or you are saying goodbye late in the evening.

For example:

• At 7 p.m., when you are just arriving somewhere: usually not 晚安
• At 11 p.m., when ending a chat: yes
• Right before bed: yes

So the key idea is not just evening, but ending the day/night.

That is the standard Chinese full stop.

Chinese uses:

• 。 instead of .

So:

• 晚安。

is simply the normal written way to end the sentence in Chinese. It does not change the meaning or pronunciation.