In context
Example sentences
中国有十四亿人口。
Zhōngguó yǒu shísì yì rénkǒu.
China has a population of 1.4 billion.
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Related words
Words with 亿
HSK levels
亿: HSK 4 on the old exam, HSK 5 on the new one. See where your old level lands
New exam levels follow the CLEC syllabus released 15 November 2025. The first official sitting of the new exam is announced for 13 December 2026, for HSK 1 to 6. HSK 7-9 is one advanced band.
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Frequently Asked Questions
亿 (yì) means "100 million" in Chinese. The new HSK exam tests it at HSK 5.
亿 is pronounced "yì" in Mandarin Chinese. The tone number is 4.
亿 is an HSK 5 word on the new HSK exam syllabus. It is HSK 4 on the old exam, HSK 5 on the new one.
Common words with 亿 include 亿万 (millions and millions), 十亿 (one billion), 千亿 (myriads), 杨亿 (Yang Yi (974-1020), Northern Song dynasty writer and poet), 以亿计 (to number in the thousands).
You can practice writing 亿 using our stroke order tool.
Reviewed by RJ Murray, Founder, HSK Lord.