sentences:  Although the book is believed to date from the end of the 17th century, Lin is not known to have produced any scholarly works.As with the "Qī", the "Lín" is attributed by most modern scholars to an otherwise-unknown person recorded as having edited it, Chén Tā ().The tonal categories of Fuzhou dialect have remained stable since the time of "Qī Lín Bāyīn".