| 四川 | sì chuān | Sichuan province (Szechuan) in southwest China, abbr. 川 or 蜀 , capital Chengdu 成都 | |
| 四周 | sì zhōu | all around | |
| 四处 | sì chù | all over the place; everywhere and all directions | |
| 四人帮 | sì rén bāng | Gang of Four: Jiang Qing 江青 , Zhang Chunqiao 張春橋 , Yao Wenyuan 姚文元 , Wang Hongwen 王洪文 , who served as scapegoats for the excesses of the cultural revolution | |
| 四面 | sì miàn | all sides |
| 1 | I have four apples. | |
| 2 | These are four roosters. | |
| 3 | Two plus two equals four. | |
| 4 | There are four people in my family. | |
| 5 | The weather in April starts to get warmer. |