| 1 | 四 | 四 | sì | si4 | four; 4 | | |
| 2 | 四人帮 | 四人幫 | sì rén bāng | si4 ren2 bang1 | 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 | | |
| 3 | 四川 | 四川 | sì chuān | Si4 chuan1 | Sichuan province (Szechuan) in southwest China, abbr. 川 or 蜀 , capital Chengdu 成都 | | |
| 4 | 四周 | 四周 | sì zhōu | si4 zhou1 | all around | | |
| 5 | 四边形 | 四邊形 | sì biān xíng | si4 bian1 xing2 | quadrilateral | | |
| 6 | 四月 | 四月 | sì yuè | Si4 yue4 | April; fourth month (of the lunar year) | | |
| 7 | 四化 | 四化 | sì huà | si4 hua4 | abbr. for 四个现代化 , Deng Xiaoping's four modernizations | | |
| 8 | 四肢 | 四肢 | sì zhī | si4 zhi1 | the four limbs of the body | | |
| 9 | 四个现代化 | 四個現代化 | sì ge xiàn dài huà | si4 ge5 xian4 dai4 hua4 | Deng Xiaoping's four modernizations practiced from the 1980s (possibly planned together with Zhou Enlai), namely: modernization of industry, agriculture, national defense and science and technology; abbr. to 四化 | | |
| 10 | 四项基本原则 | 四項基本原則 | sì xiàng jī běn yuán zé | Si4 xiang4 Ji1 ben3 Yuan2 ze2 | the Four Cardinal Principles enunciated by Deng Xiaoping 邓小平 in 1979: to uphold the socialist road, the dictatorship of the proletariat, the leadership of the CCP, and Maoism and Marxism-Leninism | | |
| 11 | 四处 | 四處 | sì chù | si4 chu4 | all over the place; everywhere and all directions | | |
| 12 | 四面 | 四面 | sì miàn | si4 mian4 | all sides | | |
| 13 | 四千 | 四千 | sì qiān | si4 qian1 | four thousand; 4000 | | |
| 14 | 四方 | 四方 | sì fāng | si4 fang1 | four-way; four-sided; in all directions; everywhere | | |
| 15 | 四面八方 | 四面八方 | sì miàn bā fāng | si4 mian4 ba1 fang1 | in all directions; all around; far and near | | |
| 16 | 四季 | 四季 | sì jì | si4 ji4 | four seasons, namely: spring 春 , summer 夏 , autumn 秋 and winter 冬 | | |
| 17 | 四大 | 四大 | sì dà | si4 da4 | the four elements: earth, water, fire, and wind (Buddhism); the four freedoms: speaking out freely, airing views fully, holding great debates, and writing big-character posters, 大鸣大放 (PRC) | | |
| 18 | 四分历 | 四分曆 | sì fēn lì | si4 fen1 li4 | "quarter remainder" calendar, the first calculated Chinese calendar, dating from c. 484 BC | | |
| 19 | 四两拨千斤 | 四兩撥千斤 | sì liǎng bō qiān jīn | si4 liang3 bo1 qian1 jin1 | lit. four ounces can move a thousand catties (idiom); fig. to achieve much with little effort | | |
| 20 | 四不像 | 四不像 | sì bù xiàng | si4 bu4 xiang4 | common name for 麋鹿 , Père David's deer (Elaphurus davidianus), which is said to resemble an amalgam of animals such as a cow, deer, donkey and horse; an odd mixture of disparate elements; hodgepodge; farrago | | |
| 21 | 四县腔 | 四縣腔 | sì xiàn qiāng | Si4 xian4 qiang1 | Sixian dialect of Hakka Chinese | | |
| 22 | 四出文钱 | 四出文錢 | sì chū wén qián | si4 chu1 wen2 qian2 | coin minted in the reign of Emperor Ling of Han 汉灵帝 , with a square hole in the middle and four lines radiating out from each corner of the square (hence the name 四出文 ) | | |
| 23 | 四重奏 | 四重奏 | sì chóng zòu | si4 chong2 zou4 | quartet (musical ensemble) | | |
| 24 | 四川盆地 | 四川盆地 | sì chuān pén dì | Si4 chuan1 pen2 di4 | Sichuan basin | | |
| 25 | 四壁萧条 | 四壁蕭條 | sì bì xiāo tiáo | si4 bi4 xiao1 tiao2 | as poor as a church mouse (idiom) | | |