留言

You use it as a verb-object phrase. You can say 给我留言 (leave me a message). You can also use it as a noun, like 看留言 (check the messages). It is very flexible. If you are calling a friend and they don't pick up, this is your go-to word. It feels natural and direct.

Use it when you are texting on WeChat. Use it when you are calling an office and get voicemail. Use it when you want to leave a nice comment on a friend's photo. It is perfect for those 'I was here' moments. Even at a wedding, you might 留言 in a guestbook. It is the bread and butter of communication.

Do not use it for deep, face-to-face heart-to-hearts. If you are talking to someone right now, you aren't 'leaving' a message. Also, avoid it for official legal documents. For those, use more formal terms like 声明 (statement). Don't use it if you are just passing on a quick verbal word from a third party. That is usually 传话 (pass a message).

In China, 留言 has exploded with social media. On platforms like Little Red Book or Weibo, the 'comment section' is the 留言区. It is a huge part of internet culture. People love to 'squat' in the comments. Historically, scholars would 留言 on walls or mountains. Now, we just do it on screens. It is a bridge between people who aren't in the same time or place.

You will often hear 留个言. Adding that 个 makes it sound much more casual and friendly. In business, you might hear 留言板 for a message board. If you are being very polite, you might say 请留言. It is a small word that does a lot of heavy lifting in daily life.