The former was the first treatise on the history of Fukienese, the latter a collation of literature and essays in Taiwanese, today still considered the best entree to the study of Taiwanese.
前者是有關閩南語史的第一篇論文，後者是對台語過去的文獻及研究作集大成的整理。今日被認為是最好的一部台語研究入門書。