There are two totally different ways to say a number in Chinese, and mixing them up is an instant giveaway. A quantity — a price, a population, a count — is read with place words: 138 as an amount is 一百三十八 (yìbǎi sānshíbā). But an identifier — a phone number, a room number, an ID card, a hotline — is read the way English reads a phone number: one digit at a time, with no place words at all. And there's a twist English doesn't have: in these digit strings the number 1 is pronounced yāo (written 幺), not yī. Once you internalise "identifier = spell it out digit by digit, and 1 = yāo," you'll read phone and room numbers like a native.
Digit by digit, no place words
For any string that identifies rather than counts, you simply name each digit in order. There is no 百, no 千, no 十 — those place words only appear when you're stating a quantity. Compare the digit-name basics: here you use exactly those bare digit names and nothing else.
| Digit | In a quantity | In a phone/room string |
|---|---|---|
| 0 | 零 (líng) | 零 (líng) |
| 1 | 一 (yī) | 幺 (yāo) |
| 2 | 二 (èr) / 两 (liǎng) | 二 (èr) — never 两 |
| 7 | 七 (qī) | 七 (qī) |
我的手机号是幺三八零零幺三八零零零。
wǒ de shǒujī hào shì yāo sān bā líng líng yāo sān bā líng líng líng
My mobile number is 138-0013-8000. (informal) — every digit spoken separately, 1 read as yāo.
我住在八幺零四房间。
wǒ zhù zài bā yāo líng sì fángjiān
I'm staying in room 8104. (informal) — 8-1-0-4, digit by digit, not 'eight thousand one hundred four'.
Why 1 becomes yāo
Over a crackly phone line, 一 (yī) and 七 (qī) sound dangerously alike — both are short, high, easy to mishear. So in any spoken digit string, 1 is replaced by 幺 (yāo), a crisp, unmistakable syllable. 幺 is a genuine character (its old meaning is "the smallest / youngest"), and it exists precisely for this job. In writing you'll usually still see the ordinary 一 or the Arabic digit 1, but the moment it's read aloud in a number string, it becomes yāo.
报号码的时候，一要念成幺，免得听成七。
bào hàomǎ de shíhou, yī yào niàn chéng yāo, miǎnde tīng chéng qī
When you read out a number, '1' is pronounced 'yāo' so it isn't misheard as '7'. (neutral) — the rule stated plainly.
报警电话是幺幺零。
bàojǐng diànhuà shì yāo yāo líng
The police number is 110. (neutral) — 1-1-0, both ones read yāo.
我的航班号是幺八八幺。
wǒ de hángbān hào shì yāo bā bā yāo
My flight number is 1881. (neutral) — flight, train and gate numbers are digit strings too.
2 stays èr, and 0 stays líng
Two more digits behave in a way learners get wrong. In a digit string, 2 is always èr, never 两 — 两 is the count-word for objects, and here nothing is being counted. And 0 is 零 (líng), the same as anywhere; in print you'll often see the circle 〇, but it's read líng.
会议改到二零二房间了。
huìyì gǎi dào èr líng èr fángjiān le
The meeting's been moved to room 202. (neutral) — 2-0-2: èr líng èr, with 二 for '2', not 两.
我的学号是幺零零幺二。
wǒ de xuéhào shì yāo líng líng yāo èr
My student ID is 10012. (neutral) — 1-0-0-1-2, mixing yāo, líng and èr.
请拨零，转接前台。
qǐng bō líng, zhuǎnjiē qiántái
Dial 0 to reach the front desk. (formal) — the single digit 0 is 零.
One important exception: years keep yī
Years are also read digit by digit — 1998 is 一九九八 (yī jiǔ jiǔ bā) — but the 1 stays yī, not yāo. The yāo substitution belongs to phone/room/ID-style identifiers, not to year readings. This is a genuine, tidy split that catches many learners, so keep it separate from the phone rule; the full treatment is on the reading years page.
我是一九九八年出生的。
wǒ shì yī jiǔ jiǔ bā nián chūshēng de
I was born in 1998. (neutral) — years are digit by digit, but 1 stays yī, not yāo.
Contrast that with a floor or building label, which is read as an ordinary small number, not a digit string — 二楼, 三号楼 — as covered on the floors and grades page. Only genuine identifier strings (phone, room, ID, hotline, flight) get the digit-by-digit + yāo treatment.
Common Mistakes
1. Reading a phone or room number as a quantity. Identifiers never take place words like 百 or 千.
❌ 房间号是八千一百零四。
Wrong reading — a room number isn't a quantity; read it digit by digit: 八幺零四 (bā yāo líng sì).
✅ 房间号是八幺零四。
fángjiān hào shì bā yāo líng sì
The room number is 8104.
2. Saying yī instead of yāo in a digit string. In a phone or room number, 1 is yāo.
❌ 手机号读成一三八……
Wrong pronunciation — reading the 1 as yī. In a phone string the 1 is always yāo.
✅ 手机号读成幺三八……
shǒujī hào dú chéng yāo sān bā……
Read the phone number as yāo sān bā… — the 1 is yāo.
3. Using 两 for '2' in a string. Digit strings never count, so it's èr.
❌ 两零两房间
Incorrect — in a digit string '2' is èr, not 两: 二零二房间.
✅ 二零二房间
èr líng èr fángjiān
room 202.
4. Using yāo in a year. Years keep yī, not yāo.
❌ 幺九九八年
Incorrect — years read digit by digit but keep yī: 一九九八年 (yī jiǔ jiǔ bā nián).
✅ 一九九八年
yī jiǔ jiǔ bā nián
the year 1998.
Key Takeaways
- Identifiers — phone, room, ID, hotline, flight, gate numbers — are read one digit at a time, with no place words (no 百/千/十).
- In these strings, 1 = yāo (幺), not yī, so it won't be misheard as 七 (qī); write 一 or 1, but say yāo aloud.
- 2 = èr (never 两) and 0 = líng in digit strings — nothing is being counted.
- Emergency and service numbers follow the same rule: 110 = 幺幺零, dial-0 = 零.
- Years are the exception: read digit by digit but keep yī (一九九八 = yī jiǔ jiǔ bā), not yāo.
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Start learning Chinese→Related Topics
- 0–10HSK 1 — The eleven building blocks of the whole number system: 零 0, 一 1, 二 2, 三 3, 四 4, 五 5, 六 6, 七 7, 八 8, 九 9, 十 10 — with the tones that trip learners up (四 sì vs 十 shí) and the 二/两 split for 'two'.
- Floors, Grades & Ordinal Contexts (二楼, 三年级)HSK 1 — A whole family of 'position' words — floors (二楼), school grades (三年级), classes (三班), window/line numbers (五号, 一号线) — use a bare cardinal with an ordinal meaning and no 第, and they take 二, never 两.
- 二 vs 两HSK 1 — Chinese has two words for 'two': 二 (èr) is the counting digit — used in ordinals, tens, years and decimals — while 两 (liǎng) means 'two of something' before a measure word and before 千/万/亿.
- Reading Years (二〇二四年)HSK 1 — A year in Chinese is read one digit at a time and capped with 年: 二〇二四年 is 'two-zero-two-four, year', not 'twenty twenty-four'. The 2s stay 二 (never 两), 一 keeps its plain yī, and zero is 〇/零 (líng).