Chinese phrase
请于〜前完成 qǐng yú 〜 qián wán chéng
Meaning
Please finish by ___
When to use it
A polite request to finish something before a stated time. It is common in work messages and other formal requests.
Example dialogue
请于明天下午5点前完成报告。 qǐng yú míng tiān xià wǔ 5 diǎn qián wán chéng bào gào
Please finish the report by 5 p.m. tomorrow.
好的，我会按时完成并今晚发给您。 hǎo de wǒ huì àn shí wán chéng bìng jīn wǎn fā gěi nín
Okay, I will finish it on time and send it to you tonight.