- 四面八方 sìmiànbāfāng everywhere(idiom) in all directions; all around
- 四面楚歌 sìmiàn Chǔgē beleagueredSurrounded by enemies on all sides and in a desperate, isolated situation without assistance.
- 四面体 sìmiàntǐ tetrahedron
- 眼观四面，耳听八方 yǎnguānsìmiàn, ěrtīngbāfāng observantTo be highly alert and observant by watching and listening in all directions.
- 第四面墙 dìsìmiànqiáng fourth wallthe fourth wall (in theater, TV, film etc)
