Chinese phrase
如果你〜就告诉我 rú guǒ nǐ 〜 jiù gào sù wǒ
Meaning
let me know if you ___
When to use it
Asks someone to tell the speaker if a situation arises. It is a polite, helpful way to offer support or invite an update.
Example dialogue
使用新系统时，如果你遇到问题就告诉我，我可以帮忙。 shǐ yòng xīn xì tǒng shí rú guǒ nǐ yù dào wèn tí jiù gào sù wǒ wǒ ké yǐ bāng máng
If you have any trouble while using the new system, tell me. I can help.
谢谢，知道了。 xiè xiè zhī dào le
Thanks, I understand.