- 开门红 kāiménhóng a good startto get off to a good start; a successful beginning at the start of a year or a new project
- 开门见山 kāiménjiànshān to get straight to the pointLiterally meaning "to open the door and see the mountain"; used to describe speaking or writing in a direct way that addresses the main topic from the very beginning.
- 开门七件事 kāiménqījiànshì seven daily necessitiesThe seven basic necessities of daily life, specifically firewood, rice, oil, salt, soy sauce, vinegar, and tea.
- 半开门 bànkāimén half-open doora door that is left halfway open
- 开门揖盗 kāiményīdào to invite disasterliterally "to open the door and bow to a thief"; to invite disaster by associating with or giving a free hand to evildoers
- 广开门路 guǎngkāiménlù to open up all avenuesTo provide many different ways to solve a problem or achieve a goal; to open up more channels for progress or success
- 开门炮 kāiménpào New Year firecrackersFirecrackers set off at the stroke of midnight on New Year's Day to welcome the new year
- 双开门 shuāngkāimén double doora pair of doors that open from the center; double doors
- 半开门儿 bànkāiménr half-open doora door that is left slightly open; a door that is ajar