China’s earliest romanization system

The most recent rerelease from Sino-Platonic Papers is Dì-y? ge L?d?ng zìm? de Hàny? P?ny?n F?ng’àn shì z?nyàng ch?nsh?ng de? (How Was the First Romanized Spelling System for Sinitic Produced? / ????????????????????), by YIN Binyong (???).

The author should be familiar to regular readers of this site, as he wrote the standard works on Hanyu Pinyin orthography — Chinese Romanization: Pronunciation and Orthography and the Xinhua Pinxie Cidian — as well as Pinyin-to-Chinese Character Computer Conversion Systems and the Realization of Digraphia in China.

The text is in Mandarin in Chinese characters. Here is the introduction.
image of the Mandarin text (in Chinese characters) of the first two paragraphs of the article

This is issue no. 50 of Sino-Platonic Papers. It was first published in November 1994.