四是四，十是十，十四是十四，四十是四十 (Sì shì sì, shí shì shí, shísì shì shísì, sìshí shì sìshí)
四是四，十是十，十四是十四，四十是四十 (Sì shì sì, shí shì shí, shísì shì shísì, sìshí shì sìshí)
Four is four, ten is ten, fourteen is fourteen, forty is forty
Why Is It Hard?
Mandarin Chinese has four tones, and the numbers four (sì, tone 4) and ten (shí, tone 2) differ only in tone and in the s vs sh consonant. At speed, the brain stops tracking both distinctions and the numbers collapse into each other. Adding fourteen (shísì) and forty (sìshí) compounds the problem since they use the same two syllables in reverse order – a phonetic palindrome that is nearly impossible to keep straight.
History
Si shi si shi shi shi is the most widely taught Chinese tongue twister in Mandarin language classes worldwide. It appears in every major Chinese textbook as the standard exercise for distinguishing the s and sh sounds and for practising the second and fourth tones. Chinese children learn it in the first year of formal schooling as part of Putonghua (standard Mandarin) pronunciation training. Foreign learners of Mandarin often cite it as the single biggest pronunciation hurdle.
Tips for Saying It
- Master the tones separately: sì (four) falls sharply, shí (ten) rises.
- The s in sì is like English s. The sh in shí has the tongue pulled slightly back – retroflex.
- Practise the four numbers in order: sì / shí / shísì / sìshí before combining into sentences.
- Slow down on shísì and sìshí – the reversal is the hardest part.
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Why Si Shi Si Shi Shi Shi Is So Hard
Si shi si, shi si shi, shisi shi shisi, si shi si shi si (four is four, ten is ten, fourteen is fourteen, forty is forty-four) is the most famous Chinese Mandarin tongue twister and one of the most phonetically vicious sentences in any language. Every syllable is either “si,” “shi,” or “shisi” – the numbers four (si), ten (shi), and fourteen (shisi). The sentence is entirely composed of these two syllables in different tones.
Mandarin has four tones plus a neutral tone. “Si” in different tones means completely different things: si1 (silk), si2 (to die), si3 (four), si4 (to look). “Shi” similarly: shi1 (teacher), shi2 (ten), shi3 (history), shi4 (is/to be). Using the wrong tone produces a completely different word – often with absurd or offensive results. This tongue twister demands perfect tonal control at high speed.
The Tonal Breakdown
In the sentence: si3 (four, falling tone) / shi2 (ten, rising tone) / si3 (four) / shi2 (ten) / shi2 (ten) / shi4 (is, falling tone) / shi2 (ten) / shi4 (is). The numbers use specific tones – three and two respectively. Saying “si” with the wrong tone accidentally says “silk” or “dead” instead of “four.” Chinese children find this twister hard too – maintaining tonal accuracy at speed is difficult even for native speakers.
Practice Tips
- Learn the tones first: si3 has a falling-rising tone / shi2 has a rising tone / shi4 has a falling tone
- Practice the distinction: si (four, dipping) vs shi (ten, rising) – they are totally different sounds and tones
- Use pinyin: si3-shi2-si3 / shi2-si3-shi2 / shi2-si4-shi2-si4 / si3-shi2-si3-shi2-si3
- Slow practice with full tone marks first, then gradually increase speed
- Record yourself and check the tones are correct before speeding up
Difficulty Rating
Difficulty: 5/5. Universally considered the hardest Chinese tongue twister and one of the hardest in any language. The si/shi distinction combined with tonal accuracy requirements makes this a genuine phonological challenge. Used extensively in Chinese phonetics courses as the definitive test of Mandarin tone control.
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