难度 Difficulty

Reading level here is the share of a chapter’s Han word tokens that sit at HSK 4 or below, counted at build time over the built corpus. Works are ordered most readable first, each with its three most readable chapters — so you can find both which book to start with and which chapter inside it.

Starting out? 入门 Beginner picks the most approachable first chapters, and 练习 Practice reads them with pinyin.