2 sentences for 噓 (xū)

1. 别再吹嘘他是你父亲了。

   bié zài chuī xū tā shì nǐ fù​qīn le.

   Stop bragging that he is your father.

   Source: OpenSubtitles

2. 我发出嘘声，他给了我一个苦笑。

   wǒ fā chū xū​shēng, tā gěi le wǒ yī​ge kǔ​xiào.

   I hissed, and he gave me a wry smile.

   Source: AI Challenger 2017