@_sotanaka Ah, here it is: https://t.co/83iGwf7mp3 Matsushita first quotes a passage on textbooks of Japanese from the 經國大典 and then adds a comment of his own. Both refer to a 老乞大. (It doesn't say "倭語老乞大" here, but the entire passage refers to materials on Japanese.) 6/ https://t.co/l1gDzTsXCQ