lǐmào bú shì wánquán jiāogěi biérén chǔlǐ érshì bǎ nǐ xūyào de bāngzhù shuō qīngchu

礼貌不是完全交给别人处理，而是把你需要的帮助说清楚。

Being polite doesn't mean leaving everything to others; it means clearly stating the help you need.