Chinese phrase
〜需要到什么时候？ 〜 xū yào dào shén me shí hòu
Meaning
How long will ___ be needed?
When to use it
Asks when something will no longer be needed. It is a neutral way to ask about the end of a period of need or requirement.
Example dialogue
健康保险证明需要到什么时候？ jiàn kāng báo xiǎn zhèng míng xū yào dào shén me shí hòu
How long will the health insurance certificate be needed?
需要到你入学后半年为止。 xū yào dào nǐ rù xué hòu bàn nián wéi zhǐ
It will be needed until six months after enrollment.