小心

You can use it as a standalone command. Just shout 小心! if someone is about to trip. You can also put it before a noun. For example, 小心地滑 means 'be careful, the floor is slippery.' It works as a verb or an adjective. It is one of the most versatile words you will learn.

Use it when crossing a busy street in Shanghai. Use it when handing a friend a hot cup of tea. It is perfect for texting a friend who is traveling. In a meeting, use it to warn about a risky business move. It shows you care about the other person's well-being. It is a very warm and protective word.

Don't use it for deep, life-altering caution. For serious life warnings, there are more formal idioms. Avoid using it if someone is already being extremely meticulous. In that case, use 细心 instead. 小心 is more about avoiding immediate physical or social blunders. Don't use it to mean 'shy' or 'scared.'

In Chinese culture, showing concern is a form of affection. Telling someone to 小心 is like giving them a small verbal hug. It reflects a collectivist mindset where people look out for each other. The characters literally mean 'small heart.' This implies that you should shrink your focus down to the tiny details. If your heart is too 'big,' you might miss the banana peel on the ground!

You will often hear 小心点 which means 'be a bit more careful.' It sounds a little more casual and conversational. Another common one is 当心, which is almost identical but slightly more common in Southern China. If you want to be very intense, you can say 千万要小心, meaning 'whatever you do, be absolutely careful.'