Chinese phrase
进来前请敲门 jìn lái qián qǐng qiāo mén
Meaning
Please knock before you come in
When to use it
A polite request to knock before entering a room. It is often used when someone needs privacy or is busy, and it sounds clear and courteous.
Example dialogue
我在开会，进来前请敲门。 wǒ zài kāi huì jìn lái qián qǐng qiāo mén
I'm in a meeting, so please knock before you come in.
好的，抱歉打扰了。 hǎo de bào qiàn dá rǎo le
All right, sorry to disturb you.