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Mandarin Phonetic Symbols
ㄅㄞˇ ㄎㄜ ㄑㄩㄢˊ ㄕㄨ百科全書百科全书 (encyclopedia) in Bopomofo
Script type (letters for onsets and rhymes; diacritics for tones)
Creator Commission on the Unification of Pronunciation
Introduced by the Beiyang government of the Republic of China
Time period
1918 [1] to 1958 in mainland China (used supplement Hanyu Pinyin in all editions of Xiandai Hanyu Cidian from 1960 to present 2016 edition);
1945 to the present in Taiwan
Directionleft-to-right  OOjs UI icon edit-ltr-progressive.svg
Related scripts
Parent systems
Oracle Bone Script
Child systems
Cantonese Bopomofo, Taiwanese Phonetic Symbols, Suzhou Phonetic Symbols, Hmu Phonetic Symbols, Matsu Fuchounese Bopomofo  [ zh ]
Sister systems
Simplified Chinese, Kanji, Hanja, Chữ Nôm, Khitan script
ISO 15924
ISO 15924 Bopo(285),Bopomofo
Unicode alias
 This article contains phonetic transcriptions in the International Phonetic Alphabet (IPA).For an introductory guide on IPA symbols, see Help:IPA.For the distinction between [ ], / / and  , see IPA § Brackets and transcription delimiters.
Mandarin Phonetic Symbol
Traditional Chinese 注音符號
Simplified Chinese 注音符号

Bopomofo (Chinese :注音符號; pinyin :zhùyīn fúhào; Wade–Giles :chu⁴yin¹ fu²hao⁴), or Mandarin Phonetic Symbols, also named Zhuyin (Chinese : 注音 ; pinyin :zhùyīn), is a Chinese transliteration system for Mandarin Chinese and other related languages and dialects. More commonly used in Taiwanese Mandarin, it may also be used to transcribe other varieties of Chinese, particularly other varieties of Mandarin Chinese dialects, as well as Taiwanese Hokkien. Consisting of 37 characters and five tone marks, it transcribes all possible sounds in Mandarin.


Bopomofo was first introduced in China by the Republican government in the 1910s and was used alongside the Wade–Giles system for romanization purposes, which used a modified Latin alphabet. Today, Bopomofo is now more common in Taiwan than on the Chinese mainland, and is after Hanyu Pinyin used as a secondary electronic input method for writing Mandarin Chinese in Taiwan as well as in dictionaries or other non-official documents.


Bopomofo is the name used by the ISO and Unicode. Zhuyin (注音) literally means phonetic notation. The original formal name of the system was 國音 字母 ; Guóyīn Zìmǔ; ' National Language Phonetic Alphabet' and 註音 字母 ; Zhùyīn Zìmǔ; 'Phonetic Alphabet or Annotated Phonetic Letters'. [2] It was later renamed 注音符號 ; Zhùyīn Fúhào; 'phonetic symbols'. In official documents, Bopomofo is occasionally called "Mandarin Phonetic Symbols I" (國語注音符號第一式), abbreviated as "MPS I" (注音一式). The system is often also called either Chu-in or the Mandarin Phonetic Symbols. [2] [3] A romanized phonetic system was released in 1984 as Mandarin Phonetic Symbols II (MPS II).

The name Bopomofo comes from the first four letters of the system: ㄅ, ㄆ, ㄇ and ㄈ. [4] Similar to the way that the word "alphabet" is ultimately derived from the names of the first two letters of the alphabet (alpha and beta), the name "Bopomofo" is derived from the first four syllables in the conventional ordering of available syllables in Mandarin Chinese. The four Bopomofo characters (ㄅㄆㄇㄈ) that correspond to these syllables are usually placed first in a list of these characters. The same sequence is sometimes used by other speakers of Chinese to refer to other phonetic systems.[ citation needed ]



The Commission on the Unification of Pronunciation, led by Wu Zhihui from 1912 to 1913, created a system called Zhuyin Zimu, [2] which was based on Zhang Binglin's shorthand. It was used as the official phonetic script to annotate the sounds of the characters in accordance with the pronunciation system called "Old National Pronunciation" (Laoguoyin). [5] A draft was released on July 11, 1913, by the Republic of China National Ministry of Education, but it was not officially proclaimed until November 23, 1928. [2] It was later renamed first Guoyin Zimu and then, in April 1930, Zhuyin Fuhao. The last renaming addressed fears that the alphabetic system might independently replace Chinese characters. [6]

Modern use

Bopomofo is the predominant phonetic system in teaching, reading and writing in elementary school in Taiwan. It is also the most popular way for Taiwanese to enter Chinese characters into computers and smartphones and to look up characters in a dictionary.

In elementary school, particularly in the lower years, Chinese characters in textbooks are often annotated with Bopomofo as ruby characters as an aid to learning. Additionally, one children's newspaper in Taiwan, the Mandarin Daily News , annotates all articles with Bopomofo ruby characters.

In teaching Mandarin, Taiwan institutions and some overseas communities such as Filipino Chinese use Bopomofo.

Bopomofo is shown in a secondary position to Hanyu Pinyin in all editions of Xiandai Hanyu Cidian from the 1960 edition to the current 2016 edition (7th edition).


Table showing Bopomofo in Gwoyeu Romatzyh Bopomofo.gif
Table showing Bopomofo in Gwoyeu Romatzyh
Bopomofo in Regular, Handwritten Regular & Cursive formats Bopomofo in Regular, Handwritten Regular & Cursive formats.jpg
Bopomofo in Regular, Handwritten Regular & Cursive formats

The Bopomofo characters were created by Zhang Binglin, taken mainly from "regularized" forms of ancient Chinese characters, the modern readings of which contain the sound that each letter represents. The consonants are listed in order of place of articulation, from the front of the mouth to the back, /b/, /p/, /m/, /f/, /d/, /t/, /n/, /l/ etc.

Origin of bopomofo symbols
BopomofoOrigin [7] IPA Pinyin WG Example
From , the ancient form and current top portion of bāo, "to wrap up; package" p bp bāo
From , a variant form of , "to knock lightly". p
From , the archaic character and current "cover" radical mì. m mm
From "right open box" radical fāng. f ff匪 fěi
From 𠚣 , archaic form of dāo. Compare the Shuowen seal Dao -seal.svg . t dt
From , an upside-down form of and an ancient form of ( Shuowen Seal Radical 528.svg and Shuowen Seal Radical 525.svg in seal script) [8] [9] t
From Nai -seal.svg / 𠄎 , ancient form of nǎi (be) n nn
From 𠠲 , archaic form of l ll
From the obsolete character guì/kuài "river" k gk gào
From the archaic character, now "breath" or "sigh" component kǎo k kǎo
From the archaic character and current radical hǎn x hh hǎo
From the archaic character jiū jch jiào
From the archaic character 𡿨 quǎn, graphic root of the character chuān (modern ) tɕʰ qchʻ qiǎo
From , an ancient form of xià. ɕ xhs xiǎo
From Zhi -seal.svg / 𡳿 , archaic form of zhī. ʈʂ zhi, zh-ch zhī
From the character and radical chì ʈʂʰ chi, ch-chʻ chī
From 𡰣 , an ancient form of shī ʂ shi, sh-sh shì
Modified from the seal script Ri -seal.svg form of (day/sun) ɻ ~ ʐ ri, r-j

From the archaic character and current radical jié, dialectically zié ([tsjě]; tsieh² in Wade–Giles) ts zi, z-ts
From 𠀁 , archaic form of , dialectically ciī ([tsʰí]; tsʻi¹ in Wade–Giles). Compare semi-cursive form Qi1 seven semicursive.png and seal-script Qi -seal.svg . tsʰ ci, c-tsʻ
From the archaic character , which was later replaced by its compound . s si, s-s
Rhymes and medials
BopomofoOrigin IPA Pinyin WG Example
From a aa
From the obsolete character 𠀀, inhalation, the reverse of kǎo, which is preserved as a phonetic in the compound . [10] o oo duō
Derived from its allophone in Standard Chinese, o ɤ eo/ê
From (also). Compare the Warring States bamboo form Ye3 also chu3jian3 warring state of chu3 small.png e -ie/êeh diē
From 𠀅hài, archaic form of .aiaiai shài
From , an obsolete character meaning "to move".eieiei shéi
From yāoauaoao shǎo
From yòuououou shōu
From the archaic character 𢎘hàn "to bloom", preserved as a phonetic in the compound fànananan shān
From 𠃉, archaic variant of or [11] ( is yǐn according to other sources [12] )ənenên shēn
From wāngangang shàng
From 𠃋 , archaic form of gōng [13] əŋengêng shēng
From , the bottom portion of ér used as a cursive and simplified formerêrh ér
From (one) i yi, -ii

From , ancient form of (five). Compare the transitory form 𠄡. u w, wu, -uu/w

From the ancient character , which remains as a radical y yu, -üü/yü


MoeKai Bopomofo U+312D.svg
From the character . It represents the fricative vowel of ㄓ,ㄔ,ㄕ,ㄖ,ㄗ,ㄘ,ㄙ, though it is not used after them in transcription. [14] ɻ̩ ~ ʐ̩ , ɹ̩ ~ -iih/ŭ



Stroke order

Bopomofo is written in the same stroke order rule as Chinese characters. Note that is written with three strokes, unlike the character from which it is derived (Chinese :; pinyin :), which has four strokes.

can be written as a vertical line ( Bpmf-i2.svg ) or a horizontal line ( Bpmf-i.svg ); both are accepted forms. Traditionally, it should be written as a horizontal line in vertical writing, and a vertical line in horizontal writing. The People's Republic of China almost exclusively uses horizontal writing, so the vertical form (in the rare occasion that Bopomofo is used) has become the standard form there. Language education in Taiwan generally uses vertical writing, so most people learn it as a horizontal line, and use a horizontal form even in horizontal writing. In 2008, the Taiwanese Ministry of Education decided that the primary form should always be the horizontal form, but that the vertical form is accepted alternative. [15] Unicode 8.0.0 published an errata in 2014 that updates the representative glyph to be the horizontal form. [16] Computer fonts may only display one form or the other, or may be able to display both if the font is aware of changes needed for vertical writing.

Tonal marks

As shown in the following table, tone marks for the second, third, and fourth tones are shared between bopomofo and pinyin. In bopomofo, the mark for first tone is usually omitted but can be included, [17] [18] while a dot above indicates the fifth tone (also known as the neutral tone). In pinyin, a macron (overbar) indicates the first tone, and the lack of a marker usually indicates the fifth (light) tone.

Tone Bopomofo Pinyin
Tone Marker Unicode NameTone MarkerUnicode Name
1ˉModifier Letter Macron
(usually omitted) [17] [18]
◌̄Combining Macron
2ˊModifier Letter Acute Accent◌́Combining Acute Accent
3ˇCaron◌̌Combining Caron
4ˋModifier Letter Grave Accent◌̀Combining Grave Accent
5˙Dot Above [19] ·Middle Dot
(usually omitted) [20]

Unlike Hanyu Pinyin, Bopomofo aligns well with the Chinese characters in books whose texts are printed vertically, making Bopomofo better suited for annotating the pronunciation of vertically oriented Chinese text.

When used in conjunction with Chinese characters, Bopomofo is typically placed to the right of the Chinese character vertically in both vertical print [21] [22] and horizontal print [23] or to the top of the Chinese character in a horizontal print (see Ruby characters).


Below is an example for the word "bottle" (pinyin :píngzi):



Erhua transcription

Words rhotacized as a result of erhua are spelled with attached to the syllable (like 歌兒ㄍㄜㄦgēr). In case the syllable uses other tones than the 1st tone, the tone mark is attached to the penultimate letter standing for syllable nucleus, but not to (e.g. 哪兒ㄋㄚˇㄦ nǎr ; 點兒ㄉㄧㄢˇㄦ yīdiǎnr ; ㄏㄠˇ玩兒ㄨㄢˊㄦ hǎowánr ). [24]



Bopomofo and pinyin are based on the same Mandarin pronunciations; hence there is a one-to-one correspondence between the two systems:

IPA and pinyin counterparts of Bopomofo finals
() 1


-o 3













-uo 3
[u̯ɤŋ], [ʊŋ]
-ong 4

-üe 2
-üan 2
-ün 2

1 Not written.

2ü is written as u after j, q, x, or y.

3ㄨㄛ/-uo is written as /-o after /b-, /p-, /m-, /f-.

4weng is pronounced [ʊŋ] (written as -ong) when it follows an initial.


Vowels a, e, o
IPA aɔɛɤaieiauouanənəŋʊŋ
Pinyin aoêeaieiaoouanenangengonger
Tongyong Pinyin e
Wade–Giles ehê/oênêngungêrh
Bopomofo ㄨㄥ
Vowels i, u, y
IPA ijejoujɛninjʊŋuwoweiwənwəŋyɥeɥɛnyn
Pinyin yiyeyouyanyinyingyongwuwo/oweiwenwengyuyueyuanyun
Tongyong Pinyin wunwong
Wade–Giles i/yiyehyuyenyungwênwêngyüehyüanyün
Bopomofo ㄧㄝㄧㄡㄧㄢㄧㄣㄧㄥㄩㄥㄨㄛ/ㄛㄨㄟㄨㄣㄨㄥㄩㄝㄩㄢㄩㄣ
Non-sibilant consonants
IPA pmfəŋtjoutweitwəntʰɤnylykɤɚkʰɤ
Pinyin bpmfengdiuduiduntegekehe
Tongyong Pinyin fongdioudueinyulyu
Wade–Giles ppʻfêngtiutuituntʻêkokʻoho
Bopomofo ㄈㄥㄉㄧㄡㄉㄨㄟㄉㄨㄣㄊㄜㄋㄩㄌㄩㄍㄜㄎㄜㄏㄜ
Sibilant consonants
IPA tɕjɛntɕjʊŋtɕʰinɕɥɛnʈʂɤʈʂɨʈʂʰɤʈʂʰɨʂɤʂɨɻɤɻɨtsɤtswotsɨtsʰɤtsʰɨ
Pinyin jianjiongqinxuanzhezhichechisheshirerizezuozicecisesi
Tongyong Pinyin jyongcinsyuanjhejhihchihshihrihzihcihsih
Wade–Giles chienchiungchʻinhsüanchêchihchʻêchʻihshêshihjihtsêtsotzŭtsʻêtzʻŭssŭ
Bopomofo ㄐㄧㄢㄐㄩㄥㄑㄧㄣㄒㄩㄢㄓㄜㄔㄜㄕㄜㄖㄜㄗㄜㄗㄨㄛㄘㄜㄙㄜ
IPA ma˥˥ma˧˥ma˨˩˦ma˥˩ma
Pinyin ma
Tongyong Pinyin ma
Wade–Giles ma1ma2ma3ma4ma
Bopomofo ㄇㄚㄇㄚˊㄇㄚˇㄇㄚˋ˙ㄇㄚ
example (Chinese characters)

Use outside Standard Mandarin

Bopomofo symbols for non-Mandarin Chinese varieties are added to Unicode in the Bopomofo Extended block.

Taiwanese Hokkien

In Taiwan, Bopomofo is used to teach Taiwanese Hokkien, and is also used to transcribe it phonetically in contexts such as on storefront signs, karaoke lyrics, and film subtitles.

Three letters no longer used for Mandarin are carried over from the 1913 standard:

Bopomofo IPA GR Pinyin

23 more letters were added specifically for Taiwanese Hokkien:

Bopomofo IPA BP Derivation
b bbㄅ with voicing circle
g ggㄍ with voicing circle
d͡ʑ zziㄐ with voicing circle
d͡z zzㄗ with voicing circle
a naㄚ with nasal curl
ɔ oofrom ㄛ
ɔ̃ nooㆦ with nasal curl
e efrom ㄝ
neㆤ with nasal curl
ãĩnaiㄞ with nasal curl
ãũnaoㄠ with nasal curl
amamㄚ and ㄇ combined
ɔmomㆦ and ㄇ combined
mㄇ with syllabic stroke
ŋ̍ngㄫ with syllabic stroke
ㆪ/ㆳ ĩ niㄧ with nasal curl
ɨㄨ and ㄧ combined (?)
ũ nuㄨ with nasal curl
-p̚small ㄅ
-t̚small ㄉ
ㆻ/ㆶ-k̚small ㄍ (and variant small ㄎ)
small ㄏ

Two tone marks were added for the additional tones: ˪, ˫


The following letters are used in Cantonese. [25]

Bopomofo IPA Jyutping

If a syllable ends with a consonant other than -an or -aan, the consonant's letter is added, followed by a final middle dot.

-ㄞ is used for [aːi] (aai) (e.g. 敗, ㄅㄞ baai6)

-ㄣ is used for [ɐn] (an) (e.g. 跟, ㄍㄣ gan1), and -ㄢ is used for [aːn] (aan) (e.g. 間, ㄍㄢ gaan1). Other vowels that end with -n use -ㄋ· for the final ㄋ. (e.g. 見, ㄍㄧㄋ· gin3)

-ㄡ is used for [ɐu] (au). (e.g. 牛, ㄫㄡ, ngau4) To transcribe [ou] (ou), it is written as ㄛㄨ (e.g. 路, ㄌㄛㄨ lou6)

ㄫ is used for both initial ng- (as in 牛, ㄫㄡ, ngau "cow") and final -ng (as in 用, ㄧㄛㄫ·, yong "use").

ㄐ is used for [t͡s] (z) (e.g. 煑, ㄐㄩ zyu2) and ㄑ is used for [t͡sʰ] (c) (e.g. 全, ㄑㄩㄋ· cyun4).

During the time when Bopomofo was proposed for Cantonese, tones were not marked.

Computer uses

Input method

An example of a Bopomofo keypad for Taiwan Bopomofo.jpg
An example of a Bopomofo keypad for Taiwan

Bopomofo can be used as an input method for Chinese characters. It is one of the few input methods that can be found on most modern personal computers without the user having to download or install any additional software. It is also one of the few input methods that can be used for inputting Chinese characters on certain cell phones.[ citation needed ]. On the QWERTY keyboard, the symbols are ordered columwise top-down (e.g. 1+Q+A+Z )

A typical keyboard layout for Bopomofo on computers Keyboard layout Zhuyin.svg
A typical keyboard layout for Bopomofo on computers


Bopomofo was added to the Unicode Standard in October 1991 with the release of version 1.0.

The Unicode block for Bopomofo is U+3100U+312F:

Bopomofo [1] [2]
Official Unicode Consortium code chart (PDF)
1. ^ As of Unicode version 14.0
2. ^ Grey areas indicate non-assigned code points

Additional characters were added in September 1999 with the release of version 3.0.

The Unicode block for these additional characters, called Bopomofo Extended, is U+31A0U+31BF:

Bopomofo Extended [1]
Official Unicode Consortium code chart (PDF)
1. ^ As of Unicode version 14.0

Unicode 3.0 also added the characters U+02EA˪MODIFIER LETTER YIN DEPARTING TONE MARK and U+02EB˫MODIFIER LETTER YANG DEPARTING TONE MARK, in the Spacing Modifier Letters block. These two characters are now (since Unicode 6.0) classified as Bopomofo characters. [26]

Tonal marks for bopomofo
Spacing Modifier Letters
ToneTone MarkerUnicodeNote
1 Yin Ping (Level)ˉU+02C9Usually omitted
2 Yang Ping (Level)ˊU+02CA
3 Shang (Rising)ˇU+02C7
4 Qu (Departing)ˋU+02CB
4a Yin Qu (Departing)˪U+02EAFor Minnan and Hakka languages
4b Yang Qu (Departing)˫U+02EBFor Minnan and Hakka languages
5 Qing (Neutral)˙U+02D9

See also

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There are a number of different writing systems for the Hokkien group of languages, including romanizations, adaptations of Bopomofo, of katakana, and of Chinese characters. Some of the most popular are compared here.

The Yale romanization of Mandarin is a system for transcribing the sounds of Standard Chinese, based on Mandarin Chinese varieties spoken in and around Beijing. It was devised in 1943 by the Yale sinologist George Kennedy for a course teaching Chinese to American soldiers, and popularized by continued development of that course at Yale. The system approximated Chinese sounds using English spelling conventions in order to accelerate acquisition of pronunciation by English speakers.

Taiwanese Phonetic Symbols constitute a system of phonetic notation for the transcription of Taiwanese languages, especially Taiwanese Hokkien. The system was designed by Professor Chu Chao-hsiang, a member of the National Languages Committee in Taiwan, in 1946. The system is derived from Mandarin Phonetic Symbols by creating additional symbols for the sounds that do not appear in Mandarin phonology. It is one of the phonetic notation systems officially promoted by Taiwan's Ministry of Education.

The Old National Pronunciation was the system established for the phonology of standard Chinese as decided by the Commission on the Unification of Pronunciation from 1913 onwards, and published in the 1919 edition of the Guóyīn Zìdiǎn. Although it was mainly based on the phonology of the Beijing dialect, it was also influenced by historical forms of northern Mandarin as well as other varieties of Mandarin and even some varieties of Wu Chinese.

Cantonese Bopomofo, or Cantonese Phonetic Symbols is an extended set of Bopomofo characters used to transcribe Yue Chinese and, specifically, its prestige Cantonese dialect. It was first introduced in early 1930s, and then standardized in 1950. It fell into disuse along with the original Bopomofo for Mandarin Chinese in the late 1950s.


  1. 中國文字改革委員會 (Committee for the Reform of the Chinese Written Language). 漢語拼音方案(草案) (Scheme for the Chinese Phonetic Alphabet (Draft)). Beijing. Feb 1956. Page 15. "注音字母是1913年拟定,1918年公布的。"
  2. 1 2 3 4 The Republic of China government, Government Information Office. "Taiwan Yearbook 2006: The People & Languages". Archived from the original on 2007-05-09.|Also available at
  3. Taiwan Headlines. "Taiwan Headlines: Society News: New Taiwanese dictionary unveiled". Government Information Office, Taiwan(ROC). Archived from the original on 2007-10-31. Retrieved 2007-09-15.
  4. "Zhuyin fuhao / Bopomofo (注音符號/ㄅㄆㄇㄈ)" Omniglot
  5. Dong, Hongyuan. A History of the Chinese Language. Fisher. p. 133.
  6. John DeFrancis. The Chinese Language: Fact and Fantasy . Honolulu, HI, USA: University of Hawaii Press, 1984. p. 242.
  7. 國音學 (8th Edition). (2008). Pages 27-30. Taiwan: 國立臺灣師範大學. 國音敎材編輯委員會.
  8. Wenlin dictionary, entry 𠫓.
  9. KangXi: page 164, character 1
  10. "Unihan data for U+20000".
  11. Wenlin dictionary, entry 𠃉.
  12. "Unihan data for U+4E5A".
  13. Wenlin dictionary, entry 𠃋.
  14. Michael Everson, H. W. Ho, Andrew West, "Proposal to encode one Bopomofo character in the UCS", SC2 WG2 N3179.
  15. Unicode document L2/14-189
  16. Unicode Consortium, "Errata Fixed in Unicode 8.0.0"
  17. 1 2 Department of Lifelong Education, Ministry of Education 教育部終身教育司, ed. (January 2017). 國語注音手冊 (in Chinese (Taiwan)). Ministry of Education; Digital version: Wanderer Digital Publishing Inc. 汪達數位出版股份有限公司. pp. 2, 7. ISBN   978-986-051-481-0. 韻符「ㄭ」,陰平調號「¯」,注音時省略不標{...}陰平 以一短橫代表高平之聲調,注音時可省略不標。標注在字音最後一個符號右上角。
  18. 1 2 Department of Lifelong Education, Ministry of Education 教育部終身教育司, ed. (January 2017). The Manual of the Phonetic Symbols of Mandarin Chinese (in English and Chinese (Taiwan)). Ministry of Education; Digital version: Wanderer Digital Publishing Inc. 汪達數位出版股份有限公司. pp. 2, 7. ISBN   978-986-051-869-6. the rhyme symbol, "ㄭ", and the mark of Yin-ping tone, "¯", could be left out on Bopomofo notes.{...}This high and level tone is noted as a short dash mark and could be left out in Bopomofo note. If it is noted, it should be put on the upper right corner of the last Bopomofo note.
  19. "A study of neutral-tone syllables in Taiwan Mandarin" (PDF). p. 3.
  20. The middle dot may optionally precede light-tone syllables only in reference books (辞书), see section 7.3 Archived 2016-02-17 at the Wayback Machine of the PRC national standard GB/T 16159-2012 Basic rules of the Chinese phonetic alphabet orthography.
  21. "Bopomofo Extended Name". 12 December 2011.
  22. "Zhuyin and Hanzi location". 22 December 2009.
  23. "Bopomofo on Taiwanese street - with English - Nov 2016 2". 3 August 2016.
  24. "The Zhuyin Alphabet 注音字母 Transcription System (Bo-po-mo-fo) (".
  25. Yang, Ben; Chan, Eiso. "Proposal to encode Cantonese Bopomofo Characters" (PDF).
  26. "Scripts-6.0.0.txt". Unicode Consortium.