Download the Book
All thirty-three chapters, free to download under CC BY 4.0. The web version is always current; offline editions track the changelog.
English · PDF
35 MB · Updated 2026-07
Chinese · PDF
33 MB · Updated 2026-07
English · EPUB
29 MB · Updated 2026-07
Chinese · EPUB
27 MB · Updated 2026-07
License and citation guidance: the License page; version history: the changelog。
Editions for ebook platforms (Apple Books, Kobo, and others) are in preparation.