pronouncekit

PRONUNCIATION RULE

y w ü iu ui un: pinyin spelling rules

Decode pinyin spelling: y and w, hidden ü after j, q and x, shortened iu, ui and un, tone-mark placement and apostrophes.

y w ü iu ui un

Mouth & tongue

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Vocal folds: vibrating

TongueTeethUvula

Simplified human pronunciation. The small uvula hangs from the palate; it is not the vocal folds. The wave indicates voicing.

Sound to demonstrate
Tone

High and level, around 55 on the five-level pitch scale.

Voice settings

The mouth starts slightly open. Movement is slowed for observation; the synthetic sound plays once at its original speed. Pause holds the current mouth shape; reset returns to the relaxed position. The panda is a symbolic teaching aid for human pronunciation, not animal anatomy. A simplified teaching model, not a measured or anatomically validated simulation. It shows the soft palate lowering for nasal sounds, but not airflow. Single syllables use eSpeak NG, a synthetic voice on your device. Its pitch range is narrower than natural speech, so use the tone diagrams and word buttons as well. Words and sentences use a voice from your browser or device when one is available. No native recordings are bundled.

Words to practice

Sentence to practice

Listen and compare

In the first pair, one is a single syllable and the other is two. In the second, both contain the same ü, spelled differently.

Pinyin here shows dictionary tones. Spoken tones change in some contexts, such as nǐ hǎo; see the lessons on tone changes.

What you are learning

Pinyin is regular, but it uses Latin letters with its own values and shortens some spellings. A few rules explain almost all of what looks strange.

What your mouth is doing

Y and w appear only when a syllable has no initial: i becomes yi, ia becomes ya, u becomes wu, ua becomes wa, and ü becomes yu. Because j, q, x and y never combine with a true u, ü drops its dots there, so ju contains ü. Iou, uei and uen are shortened to iu, ui and un after an initial.

Compared with English

Do not read pinyin as English. Q, x, zh, c and the vowels e and i all behave differently here. Hanyu Pinyin is a phonetic spelling for Standard Mandarin, not a guide to English letter values.

Build the sound, step by step

  1. Put tone marks on a or e first; on the o in ou; otherwise on the last vowel.
  2. When a syllable beginning with a, o or e follows another, separate them with an apostrophe: Xī’ān.
  3. Read lǜ, then jù, and notice that both contain the same vowel.

What to watch for

  • Reading ju as “joo” ignores the hidden ü.
  • Reading xian as two syllables without the apostrophe: Xī’ān has two, xiān has one.

Related lessons

Keep practicing

References & editorial notes

PronounceKit wrote this lesson as practical guidance for English speakers, based on the references below. The comparisons are editorial teaching suggestions. It describes common Mainland Standard Mandarin patterns, not every accent or regional variety, and it has not been independently reviewed by a pronunciation specialist or Mandarin teacher.

Published 5 November 2026