Drag-yab is a Sino-Tibetan language recently documented by Suzuki & Nyima (2018, 2019).[1][2] It is spoken in the southern half of Zhag'yab County, Chamdo, eastern Tibet.
Suzuki & Nyima (2018) document the dialect of Drag-yab spoken in the village of Razi 热孜村 in Xiangdui Town 香堆镇, Zhag'yab County.
Drag-yab is referred to by the Changdu Gazetteer (2005)[3] as Zesong 则松话, and is reported by Changdu (2005) to be spoken in Zesong 则松乡 and Bari 巴日乡 townships of Zhag'yab County.
The language is also referred to as both sMa and rMa.[2] Nyima & Suzuki (2019) report the autonym m̥a55 (or ma55), which is identical to the Larong autonym, also reported by them (m̥a55).[2]
Jiang (2022) lists Mang 芒话 and Maji 玛吉话 as Drag-yab (Chaya 察雅) varieties.[4]
Suzuki & Nyima (2018)[1] note that Drag-yab is closely related to two other recently documented Sino-Tibetan languages of Chamdo, eastern Tibet, namely Lamo and Larong. Their relationship outside of this group, the Chamdo languages, within the Sino-Tibetan family is still uncertain.
Suzuki & Nyima (2018)[1] report the following phonemes from the Razi dialect of Drag-yab.
Prenasalisation and preaspiration appear as a preinitial.
Suzuki & Nyima (2018) report that each vowel has a creaky and nasalized counterpart.
Syllable structure: cCGV
Tones are high and rising. The first two syllables of each word act as the tone bearing unit. The second syllable is occasionally out of the tone bearing unit.[1]
Drag-yab is spoken in 6 townships, along different river valleys within the Lancang (Lachu) River watershed. These include Maiqu, Kaqu, Lasongqu, Guidaqu, and Changqu.[2]
Drag-yab villages by township:[2]