zuò / zhě / zài / shū / mò / xiě / le / yí / duàn / bá / yǔ / shuō / míng / zhè / běn / shū / de / chuàng / zuò / jīng / guò作者在书末写了一段跋语,说明这本书的创作经过。At the end of the book, the author wrote a postscript explaining how it was created.