Chinese phrase
你怎么知道〜的？ nǐ zěn me zhī dào 〜 de
Meaning
How did you know ___?
When to use it
It asks how someone knows that something happened. It is often used to ask about the source of information.
Example dialogue
你怎么知道她拿到奖学金的？ nǐ zěn me zhī dào tā ná dào jiǎng xué jīn de
How did you know she got a scholarship?
她在群里发了收到奖学金的照片。 tā zài qún lǐ fā le shōu dào jiǎng xué jīn de zhào piān
She posted a photo in the group showing that she had received the scholarship.