(sāi): to plug, to stop up, to stuff in, (bound form) a stopper, a cork, (bound form) strategic stronghold

(sāi) is a Chinese character meaning “to plug.” Classified as HSK Level 6 (HSK 3.0 Standard, CLEC 2022), it is composed of (structural). It ranks #1079 in character frequency (SUBTLEX-CH corpus).

Etymologically derived, earth. Its radical form (earth) appears in many related characters such as (zài, to exist), (, earth, ground), (chǎng, field, place).

Native pronunciation
HSK 6Radical: earth13 strokesFrequency #1079 structural

Definitions

  1. to plug
  2. to stop up
  3. to stuff in
  4. (bound form) a stopper
  5. a cork
  6. (bound form) strategic stronghold

Etymology & Origin

pictophoneticearth

Components:structural

Stroke Order

1
2
3
4
5
6
7
8
9
10
11
12
13

Practice writing with real-time feedback — trace each stroke in the correct order and build muscle memory in the HanziFeed app.

Words & Compounds

Common Compounds

WordPinyinMeaning
yào sàistronghold
dǔ sèto clog up
wā sāi(slang) wow!
zǔ sèto block
huó sāipiston
sāi chētraffic jam
sī bīn sài(name) Spencer
ěr sāiearplug
bā sài luó nàBarcelona, Spain
bù lǔ sài ěrBrussels, capital of Belgium
sài miù ěr(name) Samuel
táng sèto muddle through
shuān sè(medicine) embolism
sài zúSerb ethnic group (abbr. for 塞爾維亞族|塞尔维亚族[Sai4 er3 wei2 ya4 zu2])
sāi zicork
100
Total compounds
24
As first character
44
As last character
32
As middle character

appears in 100 compound words: 24 as the first character, 44 as the last, and 32 in a middle position. Compound statistics computed from SUBTLEX-CH and HSK 3.0 vocabulary data.

Strongest Collocations

Characters that most frequently co-occur with in natural Chinese text, ranked by NPMI (Normalized Pointwise Mutual Information) — a statistical measure of association strength.

0.56915,966 co-occurrences
jiāng
0.56033,636 co-occurrences
ěr
0.559185,496 co-occurrences
bài
0.53143,326 co-occurrences
wéi
0.51262,238 co-occurrences
shuān
0.4994,368 co-occurrences
0.49376,644 co-occurrences
pàn
0.48512,630 co-occurrences
0.4743,006 co-occurrences
0.47327,756 co-occurrences

Idioms & Chengyu (20)

ĀsàibàijiāngHSK 7+

Azerbaijan (a country in the South Caucasus in Asia and Europe)

bìmùsètīngHSK 6+

to be out of touch with reality

phrase
Bùlǔsài'ěrHSK 7+

Brussels (the capital city of Belgium)

fūyǎnsèzéHSK 7+

to work halfheartedly; to go through the motions; to perform one's duty in a perfunctory manner

phrase
húchīhǎisāiHSK 6+

to recklessly stuff oneself with food; gluttony

phrase
liáo yǐ sè zéHSK 6+

in order to minimally fulfill one's responsibilities; in order to get off the hook

phrase
MǎsàzhūsàiHSK 7+

Massachusetts (a state of the United States); Massachusett

máosèdùnkāiHSK 7+

to be enlightened all of a sudden; to come to the realization all of a sudden

phrase
SègēwéiyàHSK 6+

Segovia

Sàilālì'ángHSK 6+

Sierra Leone (a country in West Africa)

sàiwēngshīmǎHSK 7+

Every cloud has a silver lining. / A setback may turn out to be a blessing in disguise.

phrase
YàsàibàiránHSK 6+

Azerbaijan (a country in the South Caucasus in Asia and Europe)

Showing 12 of 20 idioms containing .

Example Sentences

AI-Generated

豆是东北地区的主要农作物之一。

sāi dòu shì dōng běi dì ōu de zhǔ yāo nóng zuò wù zhī yī .

Soybeans are one of the primary crops in Northeast China.

Hk01.comFeb 2026

西甲|巴隆拿中场法兰基迪庄受伤 将缺阵逾月 为欧...

xī jiǎ bā sāi lóng ná zhōng chǎng fǎ lán jī dí zhuāng shòu shāng jiāng quē zhèn yú yuè wéi ōu . . .

La Liga|Barcelona midfielder Frankie Di Zhuang is injured and will be out for more than a month.

StheadlineFeb 2026

西甲|巴正式启动买拉舒福特谈判 传欲压价 曼联企...

xī jiǎ bā sāi zhèng shì qǐ dòng mǎi lā shū fú tè tán pàn chuán yù yā jià 曼 lián qǐ . . .

La Liga|Barcelona officially launched negotiations to buy Rashford, rumored to be about to lower the price of Manchester United...

中時新聞網Feb 2026

台湾人看大陆》上古城宣化一日游

tái wān rén kàn dà lù sāi shàng gǔ chéng xuān huà yī rì yóu

Taiwanese people look at the mainland" A one-day trip to the ancient city of Xuanhua

StheadlineFeb 2026

...疯玩“热狗肠包X” 珍珠虾滑杨枝甘露乜都

. . . fēng wán rè gǒu cháng bāo X zhēn zhū xiā huá yáng zhī gān lù 乜 dōu sāi

... Crazy about playing "hot dog sausage bun X" pearl shrimp slippery poplar branch nectar stuffed with everything

UdnnewsindexFeb 2026

警察变毒贩 欧奎拉凶残难捉摸

jǐng chá biàn dú fàn ōu sāi 奎 lā xiōng cán nán zhuō mō

The police turned drug dealer Ossequira was brutal and elusive

Tatoeba

你想去瓦伦西亚还是巴罗那?

Nǐ xiǎng qù wǎ lún Xī Yà háishi Bāsàiluónà?

Do you want to go to Valencia or Barcelona?

Tatoeba

玛丽,你想学尔维亚语吗?

Mǎlì, nǐ xiǎng xué Sāi'ěrwéiyàyǔ ma?

Do you want to learn Serbian, Mary?

Tatoeba

秘书把信到一个信封里。

Mìshū bǎ xìn sāi dào yī gè xìnfēng lǐ.

The secretary stuffed the letter into an envelope.

Tatoeba

当我在勒姆的时候, 我常常和约翰打网球。

Dāng wǒ zài Sāilèmǔ de shíhou, wǒ chángcháng héyuē hàn dǎ wǎngqiú.

When I was in Salem, I would often play tennis with John.

Character Family

Homophones — Characters pronounced sāi

Frequently Asked Questions

What does 塞 (sāi) mean in Chinese?
塞 (sāi) primarily means "to plug." It is classified as HSK Level 6, making it an advanced character. It ranks #1079 in character frequency.
What's the difference between 塞 and 下?
塞 (sāi) and 下 (xià) are often confused. antonym. The key distinguishing feature: 塞 (up) vs 下 (down).
How many strokes does 塞 have?
塞 is written with 13 strokes. The correct stroke order matters for recognition and handwriting speed — practice with the animated guide above to build proper technique.
What is the radical of 塞?
The radical associated with 塞 is 土 (earth). This radical appears in many characters related to earth.
What are the components of 塞?
塞 is composed of: 宀 (structural), undefined (phonetic). Understanding the components helps with both memorization and recognizing related characters.
What are common words containing 塞?
Common words with 塞 include: 要塞 (yào sài, "stronghold"); 堵塞 (dǔ sè, "to clog up"); 哇塞 (wā sāi, "(slang) wow!"); 阻塞 (zǔ sè, "to block"); 活塞 (huó sāi, "piston"). There are over 100 compound words containing this character.
What characters sound the same as 塞 (sāi)?
Several characters share the pronunciation sāi: 赛 (competition). Context and tones help distinguish between them in speech and writing.
Is 塞 the same in simplified and traditional Chinese?
Yes, 塞 is written the same way in both simplified and traditional Chinese.

Practice writing with real-time feedback

Trace stroke sequences, hear native pronunciation, and build lasting retention with spaced repetition in the HanziFeed app.

Character data sourced from Unihan (Unicode Consortium), SUBTLEX-CH frequency corpus (Cai & Brysbaert, 2010), and Make Me a Hanzi (stroke data). Collocation strength measured via NPMI (Normalized Pointwise Mutual Information). Verified by the HanziFeed linguistics team.

HSK classification follows the HSK 3.0 Standard (Center for Language Education and Cooperation, CLEC, 2022 revision). Idiom data from Wiktionary (CC BY-SA 3.0).

Data last verified: March 2026.