Chinese phrase
当心〜 dāng xīn 〜
Meaning
watch out for ___
When to use it
Warns someone to be careful about danger or trouble. It is a common, fairly direct warning, often followed by the risk to avoid.
Example dialogue
听说那家店的折扣是骗人的，当心被坑。 tīng shuō nà jiā diàn de zhé kòu shì piàn rén de dāng xīn bèi kēng
I heard the discounts at that store are a scam, so watch out for getting ripped off.
谢谢提醒，我会注意的。 xiè xiè tí xǐng wǒ huì zhù yì de
Thanks for the warning. I will be careful.