I noticed that sometimes certain finals in Chinese sound differently when combined with different initials.

For e.g., what is spelled "u" sometimes is pronounced "ü". Other times, I think the final "i" sounds differently when combined with different initials.

Is there a list of rules explaining all of these differences within standard Mandarin?

  • 2
    I always found the "bopo mofo" phonetic alphabet far better because of reasons like this. There is no duality, 'u' sound is one symbol, and the "ü" sound another one. Also, you won't be tricked into pronouncing anything in an English way (because no symbols are latin letters). Commented Dec 26, 2011 at 11:24
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    When the u is really pronounced ü, as in qu, it's not that they chose a different letter, but just that the diaeresis is droppedfor simplification, because no real qu would happen in chinese, it's a bit confusing yes.
    – Petruza
    Commented Jan 20, 2012 at 21:34
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    Personally, @Lars, I found pinyin much easier to use than zhuyin fuhao (bopo mofo). The minor changes in pronunciation took less effort for me to learn than a completely unknown set of symbols. For a learner who didn't already know the Roman alphabet, I could see zhuyin fuhao being easier.
    – Don Kirkby
    Commented Jan 21, 2012 at 6:05
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    @DonKirkby, that's interesting. I first thought most people would prefer the system that was used to introduce them to Chinese, but it was the other way around for me. I first used pinyin, but when bumping into bopo mofo I found it a lot better. Just as with turn-ons I guess, whatever works for you, is the best ;) Commented Jan 23, 2012 at 6:28
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    @LarsAndren well bopomofo has its advantages for -ui and -iu, which are spelt -uei and -iou in it, and for ü being a totally different letter from u. However, marking tone 1 with nothing and tone 0 with a dot is something I don't like. Also, the -ian combination is spelt that way, but is pronounced /jen/. And I guess spelling song as sueng and qiong as qüeng is not that much an advantage or a clear spelling. So for people who already know the Latin alphabet, I'd definitely recommend Pinyin, whereas for those who don't, well, each has its pros and cons :).
    – MickG
    Commented Sep 19, 2014 at 20:44

6 Answers 6


The pronunciations of finals do not change when used after different finals, with perhaps only one exception: 'i'. It has three variations: 'zi ci si', 'zhi chi shi ri', and all others.

NOTE: Not many Chinese know the differences, but you can compare:

English pinyin
 Lee     li
 she     shi    (the two consonants are also different)
 see     si

The three english /ee/ in the above word are the same, but the three Chinese i are all different.

However, the spellings of the finals do change when used after different initials. The details can be found in 汉语拼音方案 (the Scheme for the Chinese Phonetic Alphabet), which is the official standard for Chinese pinyin.

For the example mentioned by the OP, 'ü' will be written as 'u' after 'j' 'q' and 'x'. ('u' will never be used after 'j' 'q' or 'x')

NOTE2: I don't know whether the full detail of the scheme is appropriate for beginners. There are two links in Chinese: 汉典 BaiduBaike

  • Is there a link to that Scheme?
    – Petruza
    Commented Jan 20, 2012 at 21:36
  • @Petruza Added to links in answer. They are in Chinese though.
    – fefe
    Commented Jan 21, 2012 at 1:16
  • I would replace your second English pronunciation "she" with "sure". It's not exact, but it's closer.
    – Don Kirkby
    Commented Jan 21, 2012 at 5:49
  • @DonKirkby I'm comparing the English /ee/ in she and the Chinese i in shi. The three ee in English the the same, but the three i in Chinese are all different. The /sh/ sound in 'she' and 'sure' should be the same.
    – fefe
    Commented Jan 21, 2012 at 8:10
  • OK, I misunderstood what you were trying to show. Now that you've added more explanation, it makes sense.
    – Don Kirkby
    Commented Jan 22, 2012 at 5:40

I think one of the reasons is the loss of tone and/or stress in the syllable. But see this table, "Chinese (Mandarin)/Pronunciation of Finals", it provides a good summary of the changes.

  • How does "i" sound when placed after the initials "c", "ch", "r", "s", "sh", "z" and "zh"? Is this always the same?
    – Village
    Commented Dec 24, 2011 at 12:58
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    If you know the pronunciation of "是" (shì), then it's the same in all those cases, look up for example (following your order): 次, 吃, 日, 四, 是, 字, 只.
    – Alenanno
    Commented Dec 24, 2011 at 13:01
  • Actually @Alemanno that depends on whether you view that -i as a vowel /ɨ/, and then you're right, or as a trailing syllabic consonant, and then with z c s you have syllabic /z/, and with zh ch sh r you have syllabic /ʐ/. That, of course, depends on whether the speaker is or isn't able to distinguish z c s from zh ch sh.
    – MickG
    Commented Sep 15, 2014 at 19:35
  • Pronouncing and and listening to myself, I can hear a difference in the -i's. But I guess in speech I would not be too good at distinguishing them if the vowel (i.e. the syllabic / vocalic use of the different consonants) were the only difference. But then, for completeness, I feel it is opportune to report this :).
    – MickG
    Commented Sep 15, 2014 at 19:37

One of the easiest ways to hear the different pinyin sounds is to look on YouTube. The trickiest ones for me to learn were the different pronunciations of "i". Here are some videos that explain the differences:

There are lots more YouTube videos about pinyin sounds.

There's also a good chart at pinyin.com with all the changes described. This table at quickmandarin.com will play the sounds for you if you click on one of them. It covers the tones as well.

  • 1
    For the last point, did you mean the schwa? In that case I think that you should specify that it's "pizza" read in English, because in italian "pizza" sounds different :P
    – Alenanno
    Commented Jan 21, 2012 at 10:53
  • Yes, @Alenanno, I meant the schwa. I've replaced "pizza" with "visa", so I hope that's a bit better. I really couldn't think of any English words that use the same vowel sound as "zi, ci, si". Anyone else have better suggestions?
    – Don Kirkby
    Commented Jan 22, 2012 at 5:47
  • Maybe the exclamation ugh? The BrE pronunciation, at least... :D It's the closest one I can think of...
    – Alenanno
    Commented Jan 22, 2012 at 11:57
  • Note than when you bring up English "sure" that it's a word with very different sounds in American English versus British or Australian English, and that many readers won't be aware of this. Also YouTube links are not usable in China at this time due to the Great Firewall )-: Commented Nov 5, 2013 at 12:06
  • +1, The pinyin.info chart is by far the best source of all the answers, but it is still missing certain things.
    – Ming
    Commented Jun 18, 2014 at 1:16

'U' is pronounced 'Ü' with the initials J, Q, X and the pseudo-initial 'Y'. Otherwise it is always pronounced 'U'.

Something that might help one remember it, is that J, Q and X are also pronounced with the same tongue-position but with slightly varying flow of air. So J, Q and X are basically one pronunciation.

I like to think that the inventors of pinyin wanted to save some trouble, and decided to spare the writers of pinyin the hassle (and ink) of writing the umlaut above the 'U', when it is not absolutely necessary. (It does pose a challenge for learners though).

Some pinyin charts can help you remember it by visualization. On the chart below you'll see the 'Ü' pronunciation is grouped regardless of how it is written ('Ü' or not)

Standard Mandarin pinyin chart


My mothertongue teacher suggested the following "Pinyin false friends list". She spoke about the "7+3+5" false friends:

  1. The 7 are z c s zh ch sh r, after which i is pronounced, she said, as "silence"; this, as I said in a comment, equates to either always /ɨ/ or, more accurately, a trailing syllabic voiced fricative, i.e. zi ci si zhi chi shi ri = /tsz̩ tsʰz̩ sz̩ tʂʐ̩ tʂʰʐ̩ ʂʐ̩ ɻʐ̩/, or one may say ri = /ʐʐ̩/, that varies from speaker to speaker;
  2. The 3 are j q x, after which u is pronounced like ü in any case; that is because j q x are alveolo-palatal, and are thus never used before non-palatal sounds like u; that also explains why z c s zh ch sh r have the above sounds with -i: i is palatal, they are not; in fact, what used to be */tsi/ etc. "collapsed" into modern ji etc., and so did *gi etc, according to Wikipedia; this is why Peking is Beijing: it used to be *Beiging and got Wade-Giles Pei-king, and lost the i for "English phonetic representation";
  3. The 5 are ui iu ian üan o, which are pronounced as uei iou ien üen we respectively.

Now I do not agree to the o. Or rather, it needs specifications. o by itself is, AFAIK, only present in the 4 characters 哦喔噢嚄, which are interjections and exclamative particles, and which I would pronounce /o/ – I'm not a native though, so this must be taken cum grano salis, and they are sometimes rendered as /wo/. When o is a syllable final (e.g. bo po mo fo, actually those are the only examples, as elsewhere you find uo) it is usually pronounced /wo/. Wikipedia has this table and note three in this one agreeing with this view. Also, this Wiktionary entry, for example, translates -o to /-u̯o/, which is essentially /-wo/. With this, I think the 7+3+5 rule is a good mnemonic for these spelling-sound discrepancies.

See also here for further reading and comparisons with other Romanizations such as Wade-Giles.

There is also another thing: tone sandhi (Chinese 连续变调). Basically, third tones often change. Base rule: 3+3 -> 2+3, i.e. nǐhǎo is pronounced níhǎo. For sequences, see here and linked questions. There are also tone variations of and , which are sometimes marked, but often not marked. For those, if you are not satisfied with this, I suggest you ask another question.


Even if the pronunce is "ü", the pinyin is always "u" after: "j" "q" "x".

There's a (cruel!) mnemonic doggerel for this rule:

小淘气 (xiǎo táoqì) "the little brats" 见了鱼眼 (jiàn le yǔyǎn) "saw the eyes of a fish" 就挖去 (jiù wā qù) "and took them out"

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