Chinese graded readers: do they work?
Read at your level and a level up, read a lot, stay with a series, and keep the new words in a review.
We make Mandarin The Wild.
What the studies found
Graded readers are written in a limited vocabulary at each level, so their words come back. A study of 42 graded readers from one English series, seven at each of six levels, found that a reader reaches 95% of a book's words only by knowing the words of its level, and that learners need to read about one book a week for words to come back before they are forgotten.1
Words met once are mostly lost. Learners who read one graded reader with 25 new words in it remembered the meaning of about one of them three months later, and none they had met fewer than eight times.2 Over 37 weeks and 20 graded readers, learners kept most of what they learned, and learned more the more words they already knew.3
Readers follow a story on their own when they know about 98% of its words.4 For learners of Chinese, meanings of new words beside the text help them learn those words, even ones met only once.5
这个故事我看了两遍。
story; tale
How much of a graded story do you know?
We counted every story in the Library with an HSK level, 328 readings and 92,000 words, with the reading our word cards use, against the 2025 HSK list.6 A word you know is on the list up to your level, or built from such words (回家 is 回 + 家); names are left out.
| Story level | Words you know at its level (median story) | Words you know a level below | New words in one story (median) |
|---|---|---|---|
| HSK 2 | 94% | 82% | 15 |
| HSK 3 | 93% | 82% | 29 |
| HSK 4 | 93% | 87% | 21 |
| HSK 5 | 93% | 87% | 37 |
| HSK 6 | 95% | 90% | 31 |
At HSK 4, that is 93% of a graded story against 68% of a web novel's opening and 52% of a news article. A story one level up is still 82–90% known: below the 95–98% readers need on their own, but fine with every word explained.
Do the new words come back?
Within one story, about a quarter of its new words come back before it ends: a third at HSK 2 and 3, a fifth at HSK 5 and 6. A series brings back more. Across the Library's seven series with four or more stories at one level, half of the new words are met twice or more, but only 9% six times and 4% ten times. Even a long series is not enough repetition on its own, which is why the studies ask for a book a week, and why a review of the words you keep fills the gap.
A plan that fits the evidence
- Read at your level, a lot. Stories you know 93–95% of read fast, and speed is what lets you read a book a week.
- Step a level up with help. A story one level up is 82–90% known: tap the rest for their meaning in that sentence.
- Stay with a series. Its people, places and words come back from one story to the next.
- Keep the new words. Save the words that come back to your Backpack, and Review brings each one back with the line you met it in.
- Then move to real text. Read novels, news and web pages with every word explained by Mandarin The Wild.
The Library has free graded stories from HSK 1 to HSK 6, each read aloud, with every word explained.
How we counted
Every Library reading with an HSK level on 18 October 2026, cut into words by the same reading the Library shows, against the 2025 HSK list. A word you know is on the list up to the level, or built from listed words up to it; a new word is one a reader a level below does not know. Names, numbers and Latin letters are left out. A word "comes back" when it is met twice or more; a series is the stories of one series at one level, read in order. "Median" is the middle story.
Questions
Do graded readers work for Chinese?
Yes, for reading: a learner knows about 93% of the words in a graded story at their level, against 52–68% of real news and novels at HSK 4. For new words, one book is not enough: studies find words met fewer than eight times are mostly forgotten, so read a lot, about a book a week, and review the words you keep.
What level of graded reader should I read?
Your own level, most of the time: you know about 93% of its words. A story one level up is 82–90% known, which is fine when you can tap the other words for their meaning.
How many graded readers should I read?
About one a week at your level, the pace a study of graded readers found keeps new words coming back before they are forgotten.
Sources
Checked on 18 October 2026. Prices and features change; tell us if one has.
- Nation and Wang (1999), Graded readers and vocabulary, Reading in a Foreign Language 12(2)
- Waring and Takaki (2003), At what rate do learners learn and retain new vocabulary from reading a graded reader?, Reading in a Foreign Language 15(2)
- Webb and Chang (2015), How does prior word knowledge affect vocabulary learning progress in an extensive reading program?, Studies in Second Language Acquisition 37(4)
- Hu and Nation (2000), Unknown vocabulary density and reading comprehension, Reading in a Foreign Language 13(1)
- Zhou and Day (2020), The incidental learning of L2 Chinese vocabulary through reading, Reading in a Foreign Language 32(2)
- HSK: the official site of the Chinese Proficiency Test