Chinese phrase
请在〜前回复 qǐng zài 〜 qián huí fù
Meaning
Please reply by ___
When to use it
This politely asks someone to reply before a stated time. It is common in messages and work-related requests, with a clear and respectful tone.
Example dialogue
我需要报表，请在明天中午前回复。 wǒ xū yào bào biǎo qǐng zài míng tiān zhōng wǔ qián huí fù
I need the report, so please reply by noon tomorrow.
收到，我会在中午前把报表发给你。 shōu dào wǒ huì zài zhōng wǔ qián bǎ bào biǎo fā géi nǐ
Got it. I will send you the report before noon.