独门

dú mén jìn chū hù bù gān rǎo

独门进出，互不干扰。

The households each have their own courtyard and entrance, so that none of them interferes with the others.

dú mén dú hù

独门独户

house with its own entrance

dú mén jué huó

独门绝活

special skill possessed solely by one individual or family

tā chǔ lǐ nà lèi wèn tí yǒu dú mén jì qiǎo

他处理那类问题有独门技巧。

He has an ingenious technique for dealing with problems of that sort.

wǒ zài diǎn cài fāng miàn yǒu dú mén jué jì

我在点菜方面有独门绝技。

I got a special ordering technique.