系 (xì): to connect, to relate to, to tie up

系 (xì) is a Chinese character meaning “to connect.” Classified as HSK Level 1 (HSK 3.0 Standard, CLEC 2022), it is composed of 丿 (structural) and 糸 (semantic). It ranks #216 in character frequency (SUBTLEX-CH corpus).

Etymologically derived, 系 thread. Its radical form 纟 (silk) appears in many related characters such as 累 (lèi, tired), 绍 (shào, to continue), 给 (gěi, give).

Spoken pronunciation

Definitions

  1. to connect
  2. to relate to
  3. to tie up

Etymology & Origin

系

pictophoneticthread

Decomposition: ⿱丿糸 (layout: top-bottom)

Stroke Order

1
2
3
4
5
6
7

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

Words & Compounds

HSK Vocabulary with 系

WordPinyinMeaningHSK
关系noun/verbguān xirelation3
联系verblián xìvariant of 聯繫|联系4
没关系interjectionméi guān xiit doesn't matter1
系统noun/adjectivexì tǒngsystem5
系列nounxì lièseries6
体系nountǐ xìsystem6
一系列adjectiveyī xì lièa series of6

Common Compounds

WordPinyinMeaning
星系nounxīng xìsee 恆星系|恒星系
性关系nounxìng guān xisexual relations
太阳系proper-nountài yáng xìsolar system
银河系proper-nounyín hé xìMilky Way Galaxy
干系noungān xìresponsibility
人际关系nounrén jì guān xìinterpersonal relationship
维系verbwéi xìto maintain
联系人nounlián xì réncontact person
系主任nounxì zhǔ rènhead of a (university) department
神经系统shén jīng xì tǒng(anatomy) nervous system
系数nounxì shùcoefficient
直系亲属zhí xì qīn shǔnext of kin
关系网guān xi wǎngnetwork of people with whom one has dealings on the basis of "scratch my back and I'll scratch yours"
操作系统nouncāo zuò xì tǒngoperating system
循环系统nounxún huán xì tǒngcirculatory system
100
Total compounds
12
As first character
66
As last character
22
As middle character

系 appears in 100 compound words: 12 as the first character, 66 as the last, and 22 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 系 in natural Chinese text, ranked by NPMI (Normalized Pointwise Mutual Information) — a statistical measure of association strength.

统tǒng
0.668268,222 co-occurrences
列liè
0.629357,252 co-occurrences
关guān
0.536157,635 co-occurrences
联lián
0.47050,706 co-occurrences
操cāo
0.42314,864 co-occurrences
体tǐ
0.40939,592 co-occurrences
禀bǐng
0.39610 co-occurrences
紧jǐn
0.3885,184 co-occurrences
缘yuán
0.3864,512 co-occurrences
授shòu
0.38219,300 co-occurrences

Idioms & Chengyu (18)

公共关系gōnggòng guānxìHSK 3+

public relations

noun
国际关系guójì guānxìHSK 4+

international relations

noun
呼吸系统hūxī xìtǒngHSK 5+

respiratory system

noun
解铃系铃jiě líng xì língHSK 5+

see 解鈴還須繫鈴人|解铃还须系铃人

phrase
开放系统kāifàng xìtǒngHSK 5+

open system

noun
利害关系lì hài guān xiHSK 4+

stake; vital interest; concern

phrase
淋巴系统línbā xìtǒngHSK 6+

lymphatic system

noun
免疫系统miǎnyì xìtǒngHSK 6+

immune system

noun
裙带关系qúndài guānxìHSK 3+

cronyism; nepotism

noun
人际关系rénjìguānxìHSK 4+

interpersonal relationship

noun
闪含语系ShǎnhányǔxìHSK 6+

the Hamito-Semitic (Afroasiatic) language family

社会关系shè huì guān xìHSK 4+

social relation

phrase

Showing 12 of 18 idioms containing 系.

Example Sentences

AI-Generated

这两个事件之间存在着密切的联系。

Zhè liǎng gè shìjiàn zhī jiān cúnzài zhe mìqiè de liánxì.

There is a close connection between these two events.

LtnFeb 2026

美财长:与贸易夥伴联系 各国盼维持既有关税协议

měi cái cháng : yǔ mào yì 夥 bàn lián xì gè guó pàn wéi chí jì yǒu guān shuì xié yì

U.S. Treasury Secretary: Liaising with trading partners Countries hope to maintain existing tariff agreements

Hk01.comFeb 2026

...中山大宅跟北方煮锅贴过年 圈中老公杜燕歌系清朝皇族后裔

. . . zhōng shān dà zhái gēn běi fāng zhǔ guō tiē guò nián juān zhōng lǎo gōng dù yān gē xì qīng cháo huáng zú hòu yì

... Zhongshan Mansion and the north cook potstickers for the New Year, and her husband Du Yange in the circle is a descendant of the Qing Dynasty royal family

百度新闻Feb 2026

...场外音丨陆玮鑫:冬奥会需引入“鹰眼挑战”系..

. . . chǎng wài yīn 丨 lù 玮 鑫 : dōng ào huì xū yǐn rù yīng yǎn tiāo zhàn xì . .

... Off-site sound丨Lu Weixin: The Winter Olympics need to introduce the "Eagle Eye Challenge" system:

百度新闻Feb 2026

中外交流|塞尔维亚举行系列新春庙会活动庆祝中国年

zhōng wài jiāo liú sāi ěr wéi yà jǔ háng xì liè xīn chūn miào huì huó dòng qìng zhù zhōng guó nián

Sino-Foreign Exchange|Serbia celebrates Chinese New Year with a series of Lunar New Year temple festivals

百度新闻Feb 2026

学习规划建议每日问答丨构建智能化军事体系

xué xí guī huá jiàn yì měi rì wèn dā 丨 gòu jiàn zhì néng huā jūn shì tī xì

Study Planning Tips: Daily Q&A丨Building an Intelligent Military System

Tatoeba

你是不是跟长岛家有关系的?

Nǐ shì bù shì gēn Chángdǎo jiā yǒu guānxì de?

Are you related to the Nagashima family?

Tatoeba

您的家族史跟中医有没有关系?

Nín de jiāzú shǐ gēn Zhōngyī yǒuméiyǒu guānxi?

Does your family background involve Chinese medicine?

Tatoeba

你还和你的高中同学保持联系吗?

Nǐ hái hé nǐ de gāozhōng tóngxué bǎochí liánxì ma?

Do you keep in contact with your high school classmates?

Tatoeba

汤姆那里有联系过你吗?

Tāngmǔ nàli yǒuliánxì guo nǐ ma?

Have you heard from Tom?

Character Family

Semantic Family — Characters sharing the 糸 (thread) component

纟 Radical Family — Characters sharing the silk radical

Homophones — Characters pronounced xì

Frequently Asked Questions

What does 系 (xì) mean in Chinese?
系 (xì) primarily means "to connect." It is classified as HSK Level 1, making it a beginner-level character. It ranks #216 in character frequency.
What's the difference between 系 and 下?
系 (xì) and 下 (xià) are often confused. antonym. The key distinguishing feature: 系 (up) vs 下 (down).
How many strokes does 系 have?
系 is written with 7 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 系?
The radical associated with 系 is 纟 (silk). This radical appears in many characters related to silk.
What are the components of 系?
系 is composed of: 丿 (structural), 糸 (semantic). Its IDS decomposition is ⿱丿糸 with a top-bottom layout. Understanding the components helps with both memorization and recognizing related characters.
What are common words containing 系?
Common words with 系 include: 关系 (guān xi, "relation"); 联系 (lián xì, "variant of 聯繫|联系"); 没关系 (méi guān xi, "it doesn't matter"); 系统 (xì tǒng, "system"); 系列 (xì liè, "series"). There are over 100 compound words containing this character.
What characters sound the same as 系 (xì)?
Several characters share the pronunciation xì: 西 (the West), 息 (breath), 希 (to hope), 喜 (to be fond of), and 6 more. Context and tones help distinguish between them in speech and writing.
Is 系 the same in simplified and traditional Chinese?
No. The simplified form is 系 and the traditional form is 係.

Practice writing 系 with real-time feedback

Trace stroke sequences, hear spoken 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.