Caijia is an endangered Sino-Tibetan language spoken in an area centred on Bijie, in the west of the Chinese province of Guizhou. It was first documented by Chinese researchers in the 1980s. It has been described by different authors as a relative of Bai or an early split from Old Chinese. The autonym is. According to Lu (2022), Caijia speakers in Xingfa 兴发乡, Hezhang County refer to their language…