Ba-Shu Chinese (Wade-Giles: Pa-Shu Chinese; Chinese: 巴蜀語; Sichuanese Pinyin: Ba¹su²yu³; IPA: [pa˥su˨˩y˥˧]), or Old Sichuanese (or Old Szechwanese; Chinese: 蜀語), is an extinct Sinitic language spoken in what is now Sichuan province and Chongqing municipality of China. This language was first attested during the Western Han dynasty and represents one of the first splits from Old Chinese or Early Middle Chinese. It went extinct during the Ming dynasty, where it was supplanted by Southwestern Mandarin, after settlement by people from other parts of China. Phonological aspects of Ba-Shu Chinese are preserved in the Minjiang dialect of Sichuanese Mandarin.
- ^ 向学春（2008年第5期），《四川方言中的古巴蜀土著语研究》，重庆三峡学院学报
- ^ 刘晓南（2009年第8卷第6期），《试论宋代巴蜀方言与现代四川方言的关系——兼谈文献考证的一个重要功用: 追寻失落的方言》，语言科学