- 黑盒子 hēihézi black box (flight recorder)a device on an aircraft that records flight data and cockpit conversations, used to investigate accidents; also known as a [[黑匣子|黑匣子|hei1 xia2 zi5]]
- 盒子炮 hézipào Mauser pistolThe Mauser Military Pistol or C96, a German semi-automatic pistol characterized by its wooden holster that could be attached as a shoulder stock; also called [[驳壳枪|駁殼槍|bo2 ke2 qiang1]] or [[盒子枪|盒子槍|he2 zi5 qiang1]].
- 菜盒子 càihézi vegetable pocketfried dough pocket filled with vegetables and egg, similar to a turnover or empanada
- 韭菜盒子 jiǔcàihézi chive pocketchive pocket; a savory pan-fried turnover stuffed with garlic chives and often scrambled eggs or vermicelli
- 盒子菜 hézicài boxed mealMeal or dish served in a box; boxed lunch
- 盒子枪 héziqiāng Mauser pistol(colloquial) Mauser C96 pistol; an early semi-automatic pistol characterized by its wooden holster that doubles as a shoulder stock. Also known as [[驳壳枪|駁殼槍|bo2 ke2 qiang1]] or [[盒子炮|盒子炮|he2 zi5 pao4]].
- 潘多拉的盒子 pānduōlādehézi Pandora's boxa source of many unforeseen and unexpected troubles; a process that once begun generates many complicated problems
