wàn num.

Ten thousand, the largest standard unit of ancient Chinese counting. Countless, myriad, all things; also "absolutely / utterly" in emphatic negation (e.g., 万万不可). A scorpion with a hooked tail — the old form 萬, whose many legs suggested an enormous number.

Common Usage & Traps

  • 一万 (yī wàn) — ten thousand
  • 十万 (shí wàn) — one hundred thousand
  • 一百万 (yī bǎi wàn) — one million
  • 一千万 (yī qiān wàn) — ten million
  • 一万二 (yī wàn èr) — twelve thousand (casual shorthand)
  • 万块 一万块

    When 万 is the whole number, Chinese needs 一 before it. 万块 sounds broken.

  • 十千 一万

    Chinese does not build ten thousand as 十千. It has the unit 万.

  • 一个万 一万

    You don't put 个 before number units like 万. It is part of the number, not a countable object.

  • 一百五十千 十五万

    Chinese groups by 万, not by thousands. 150,000 is 十五万.

Why does 150,000 become 十五万, not 一百五十千?

Chinese counts in ten-thousands: 万 is 10,000, so 150,000 is 十五万.

English groups big numbers by thousands. Chinese starts a new unit at 万. One 万 is 10,000. Ten 万 is 十万, or 100,000. One hundred 万 is 百万, or 1,000,000. One thousand 万 is 千万, or 10,000,000. So 150,000 is fifteen 万, written 十五万. “零百千万亿, 可以医椅衣。” (Zero, hundred, thousand, ten thousand, hundred million — they can sound like 'doctor,' 'chair,' 'clothes.') ── [《一二三(2)》](/read/counting-days-rhymes#s3)

DimensionNaturalAvoid
10,000一万十千
100,000十万一百千
1,000,000一百万十十万
150,000十五万一百五十千
10,000,000一千万十百万

Can you say 这个手机要万块?

No—standalone 10,000 is 一万; 万 alone sounds broken.

When 万 is the whole number, Chinese needs 一 in front. You say 一万块, 一万人, 一万次. But 万 can appear without 一 in fixed number chunks like 百万, 千万, 上万, 数万. Those chunks work because 万 is attached to another unit or phrase, not standing alone.

DimensionNaturalAvoid
10,000 yuan一万块万块
10,000 times一万次万次
over 10,000上万万以上

Does 一万二 mean 12,000 or 10,002?

一万二 means 12,000, not 10,002; the last unit is understood.

In prices and casual speech, Chinese often drops the final unit after 万, 千, or 百. So 一万二 is short for 一万二千, or 12,000. 一万五 means 15,000. If you mean 10,002, you must say 一万零二. The 零 marks the empty place.

DimensionNaturalAvoid
12,000一万二 / 一万二千一万零二
10,002一万零二一万二
15,000一万五 / 一万五千一万零五
1,200一千二 / 一千二百一千零二

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