Chinese phrase
从什么时候开始生效？ cóng shén me shí hòu kāi shǐ shēng xiào
Meaning
When does it take effect?
When to use it
Asks when something becomes valid or starts to apply. It is used to ask about the start date of a ticket, rule, service, or agreement.
Example dialogue
这张门票从什么时候开始生效？ zhè zhāng mén piào cóng shén me shí hòu kāi shǐ shēng xiào
When does this ticket take effect?
演出当天开始生效，只能当天使用。 yǎn chū dàng tiān kāi shǐ shēng xiào zhǐ néng dàng tiān shǐ yòng
It takes effect on the day of the performance and can only be used that day.