Chinese phrase
需要〜证明吗？ xū yào 〜 zhèng míng ma
Meaning
Do I need proof of ___?
When to use it
This asks whether proof of something is needed. It is a polite way to check which documents are required in a practical or formal situation.
Example dialogue
进馆时，需要预约证明吗？ jìn guǎn shí xū yào yù yuē zhèng míng ma
When entering the venue, do I need proof of my reservation?
不用，出示手机订单就行。 bú yòng chū shì shǒu jī dìng dān jiù xíng
No, just show the booking on your phone.