How do you say long time no see in Chinese?

There are a few ways to say "long time no see" in Chinese, depending on the context and the level of formality you want to use:

Formal:

* 久违 (jiǔwéi): This literally means "long absent" and is the most formal way to say "long time no see."

* 久仰大名 (jiǔ yǎng dà míng): This means "I've long admired your name" and is appropriate when meeting someone you've heard of but haven't met before.

Informal:

* 好久不见 (hǎo jiǔ bù jiàn): This is the most common and informal way to say "long time no see." It literally means "long time not see."

* 好久不见，最近怎么样？ (hǎo jiǔ bù jiàn, zuì jìn zěn me yàng?): This means "Long time no see, how are you doing lately?" It is a polite and friendly way to start a conversation after a long time.

* 好长时间没见了 (hǎo cháng shí jiān méi jiàn le): This means "It's been a long time since we last met."

Note: The appropriate way to say "long time no see" depends on the relationship between you and the person you are speaking to. For example, you would use a more formal phrase like "久违" when speaking to an elder or someone you respect.

Example:

* 久违了！ (jiǔwéi le!): Long time no see! (Formal)

* 好久不见！ (hǎo jiǔ bù jiàn!): Long time no see! (Informal)